[{"from": "human", "value": "Generate a molecule based on this description. The molecule is a tetracarboxylic acid that is an optically active twelve-membered tetraazamacrocycle having a carboxymethyl group attached to each of the nitrogens and a 4-substituted benzyl group at the 2-position. It has a role as an epitope. It is an azamacrocycle and a tetracarboxylic acid. It is functionally related to a DOTA."}, {"from": "gpt", "value": "[C][C][N][Branch2][Branch1][O][C][C][N][Branch2][Ring2][#C][C@H1][Branch2][Ring1][=Branch1][C][N][Branch1][N][C][C][N][Ring1][N][C][C][=Branch1][C][=O][O][C][C][=Branch1][C][=O][O][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C][S][C][C][O][C][C][=Branch1][C][=O][O][C][C][=Branch1][C][=O][O]"}]