[{"from": "human", "value": "Describe this molecule. [C][C][=C][Branch1][#Branch2][N][C@H1][Ring1][Branch1][C][C][Ring1][Ring2][=O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion that is the conjugate base of (5R)-carbapenem-3-carboxylic acid, obtained by deprotonation of the carboxy group. It is a conjugate base of a 1-carbapenem-3-carboxylic acid."}]