Here's a short story:

Ethanol, also called alcohol, ethyl alcohol, and drinking alcohol, is a compound and simple alcohol with the chemical formula . Its formula can be written also as −− or − (an ethyl group linked to a hydroxyl group), and is often abbreviated as EtOH. Ethanol is a volatile, flammable, colorless liquid with a slight characteristic odor. It is used as a drug and is the principal type of alcohol found in alcoholic drinks. 

Ethanol is naturally produced by the fermentation of sugars by yeasts or via petrochemical processes, and is most commonly considered as a popular recreational drug. It also has medical applications as an antiseptic and disinfectant. The compound is widely used as a chemical solvent, either for scientific chemical testing or in synthesis of other organic compounds, and is a vital substance utilized across many different kinds of manufacturing industries. Ethanol is also used as a clean energy burning fuel source. 

"Ethanol" is the systematic name defined by the International Union of Pure and Applied Chemistry (IUPAC) for a compound consisting of alkyl group with two carbon atoms (prefix "eth-"), having a single bond between them (infix "-an-"), attached functional group-OH group (suffix "-ol"). 

The "eth-" prefix and the qualifier "ethyl" in "ethyl alcohol" originally come from the name "ethyl" assigned in 1834 to the group - by Justus Liebig. He coined the word from the German name "Aether" of the compound -O- (commonly called "ether" in English, more specifically called "diethyl ether"). According to the Oxford English Dictionary, "Ethyl" is a contraction of the Ancient Greek αἰθήρ (aithḗr, “upper air”) and the Greek word "" ("hyle", substance). (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: What is Ethanol also called?
Guess: alcohol, ethyl alcohol, and drinking alcohol
Confidence: <appropriate level of confidence in this guess>

Question: How is it often abbreviated?
Guess: EtOH
Confidence: <appropriate level of confidence in this guess>

Question: How is it produced?
Guess: by the fermentation of sugars by yeasts or via petrochemical processes
Confidence: <appropriate level of confidence in this guess>

Question: Does it have any medical applications?
Guess: yes
Confidence: <appropriate level of confidence in this guess>

Question: Who defines the systematic name Ethanol?
Guess: International Union of Pure and Applied Chemistry
Confidence: <appropriate level of confidence in this guess>

Question: What is it used as in chemical testing or synthesis of organic compounds?
Guess: a chemical solvent
Confidence: <appropriate level of confidence in this guess>

Question: What is its medical applications?
Guess: antiseptic and disinfectant
Confidence: <appropriate level of confidence in this guess>

Question: According to the Oxford English Dictionary what is Ethyl a contraction of?
Guess: Ancient Greek αἰθήρ
Confidence: <appropriate level of confidence in this guess>

Question: and what other word?
Guess: Greek word "" ("hyle", substance)
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: Can Ethanol be used as a fuel source?

yes