[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a penicillanic acid having a (6R)-formamido substituent. It is functionally related to a 6-aminopenicillanic acid. It is a conjugate acid of a 6-formamidopenicillanate."}, {"from": "gpt", "value": "[C][C][Branch2][Ring1][O][C@@H1][Branch2][Ring1][C][N][C@H1][Branch1][Ring2][S][Ring1][Branch1][C@@H1][Branch1][Branch1][C][Ring1][Branch1][=O][N][C][=O][C][=Branch1][C][=O][O][C]"}]