[{"from": "human", "value": "Describe this molecule. [C][C@@H1][Branch1][#Branch1][C][=Branch1][C][=O][C][Cl][N][C][=Branch1][C][=O][C@@H1][C][C][C][N][Ring1][Branch1][C][=Branch1][C][=O][C@H1][Branch1][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][C][C][N][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is a tripeptide derived from methoxysuccinyl-Ala-Ala-Pro-Ala by conversion of the terminal carboxy group to the corresponding chloromethyl ketone. It has a role as an EC 3.4.21.37 (leukocyte elastase) inhibitor and an EC 3.4.21.64 (peptidase K) inhibitor. It is an alpha-chloroketone, a tripeptide and a methyl ester. It is functionally related to a succinic acid."}]