Multifunctional Compounds A1 The functional group with the highest priority determines the parent name. Acid ester amide nitrile > aldehyde ketone alcohol amine alkene alkyne. OCH2CH3 ethyl o-cyanobenzoate CN Multifunctional Compounds ™The functional group with the highest priority determines the parent name. ™Acid > ester > amide > nitrile > aldehyde > ketone > alcohol > amine > alkene > alkyne. C CN O OC H2CH 3 ethyl o-cyanobenzoate