Linkages named for this functional group join the monomers of the 3D printing filament PLA. Compounds with this functional group and acyl (“ace-ill”) chlorides react with [emphasize] two equivalents of Grignard reagent to form tertiary alcohols. Cyclic varieties of these (-5[1])compounds are known as (10[2]-5[2])lactones. Examples of (10[1])these compounds such as triglycerides can be (-5[1])hydrolysed with (10[1])sodium hydroxide in (-5[1])saponification. Names of these compounds feature the suffix “-oate,” (“oh-ate”) as in methyl propanoate (“pro-PAN-oh-ate”). In a reaction named for Emil Fischer, these compounds are synthesized (10[1])by refluxing an alcohol with a carboxylic acid. For 10 points, an R-C-O-O-R’(“R-C-O-O-R-prime”) group characterizes what fruit-scented compounds? (10[1])■END■ (10[3]0[3])