N-carbobenzyloxy-glycine-glycine-leucine-p-nitroanilide Benzyloxycarbonylglycylglycyl-L-leucyl-p-nitroanilide N-[(Phenylmethoxy)carbonyl]glycylglycyl-N-(4-nitrophenyl)-L-leucinamide Z-GGL-pNA CBZ-GLY-GLY-LEU-P-NITROANILIDE BENZYLOXYCARBONYLGLYCYLGLYCYL-L-LEUCINE P-NITROANILIDE N-CARBOBENZOXY-GLYCYLGLYCYL-L-LEUCINE P-NITROANILIDE N-CBZ-GLY-GLY-LEU P-NITROANILIDE