[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a member of carbapenems and a pivaloyloxymethyl ester."}, {"from": "gpt", "value": "[C][C@@H1][C@@H1][C@H1][Branch2][Branch1][C][C][=Branch1][C][=O][N][Ring1][Branch1][C][=Branch2][Ring1][Ring2][=C][Ring1][Branch2][S][C][C][N][Branch1][Ring2][C][Ring1][Ring2][C][=N][C][C][S][Ring1][Branch1][C][=Branch1][C][=O][O][C][O][C][=Branch1][C][=O][C][Branch1][C][C][Branch1][C][C][C][C@@H1][Branch1][C][C][O]"}]