[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a tripeptide derived from methoxysuccinyl-Ala-Ala-Pro-Val 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. It is an alpha-chloroketone, a tripeptide and a methyl ester. It is functionally related to a succinic acid."}, {"from": "gpt", "value": "[C][C@@H1][Branch2][Ring2][Branch2][C][=Branch1][C][=O][N][C@@H1][Branch1][C][C][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch1][C][Branch1][C][C][C][C][=Branch1][C][=O][C][Cl][N][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O][C]"}]