<prompt> Which one of the following is not an amideLignocaineProcaineBupivacaineDibucaine  <response>: Esters aminoesters :- Procaine, chlorprocaine, tetracaine amethocaine, Benzocaine, Cocaine.Amides aminoamides Lignocaine, Mepivacaine, Prilocaine, Bupivacaine, Etidocaine, Ropivacaine , Dibucaine. 