renewable biomass, (v) is not sold or used for the production of any food, feed, or fuel, (vi) is not a combination of renewable chemicals on the list under clause (vii) (or added to such list under subparagraph (B)) for which a credit has been claimed by the taxpayer in any taxable year under this section or section 48E, and (vii) is acetic acid, acrylic acid, acyl glutamate, adipic acid, algae oils, algae sugars, 1,4-butanediol (BDO), iso-butanol, n-butanol, C10 and higher hydrocarbons produced from olefin metathesis, carboxylic acids produced from olefin metathesis, cellulosic sugar, diethyl methylene malonate, dodecanedioic acid (DDDA), esters produced from olefin metathesis, ethyl acetate, ethylene glycol, farnesene, 2,5-furandicarboxylic acid, gamma-butyrolactone, glucaric acid, hexamethylenediamine (HMD), 3-hydroxy propionic acid, iso-butene, isoprene, itaconic acid, lactide, levulinic acid, polyhydroxyalkonate (PHA), polylactic acid (PLA), polyethylene furanoate (PEF), polyethylene terephthalate (PET), polyitaconic acid, polyols from vegetable oils, poly(xylitan levulinate ketal), 1,3-propanediol, 1,2-propanediol, rhamnolipids, short and medium chain carboxylic acids produced from anaerobic digestion, succinic acid, terephthalic acid, vegetable fatty acid-derived ethyl esters containing vegetable oil, or p-xylene. (B) Additional renewable chemicals The Secretary may add chemicals to the list of renewable chemicals in subparagraph (A)(vii). Not later than 180 days after the enactment of this section, the Secretary, in consultation with the Secretary of Agriculture, shall establish a program to consider applications from taxpayers to add renewable chemicals to such list. Any chemical added to such list must meet the requirements set forth in clauses (i) through (v) of subparagraph (A) (without regard to the phrase by the taxpayer in clause (ii) thereof). (2) Biobased content The term biobased content means, with respect to any renewable chemical, the biobased content of the total mass of organic carbon in