[{"from": "human", "value": "Describe this molecule. [C][C][C@H1][Branch1][#Branch2][N][C@@H1][Ring1][Branch1][C][C][Ring1][Ring2][=O][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a carbapenam substituted at position 3 by a carboxy group (the 3S,5S-diastereomer). It is a conjugate acid of a (3S,5S)-carbapenam-3-carboxylate."}]