What will be the name of CH2=CH-O-CO-CH3?
Most people would call it vinyl acetate. If you want the systematic name, then it is ethenyl ethanoate.

It is formally derived from "vinyl alcohol" and acetic acid, from which the name follows easily. See here (https://en.wikipedia.org/wiki/Ester#IUPAC_nomenclature), for example.

The compound is https://en.wikipedia.org/wiki/Vinyl_acetate.