[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][N][Branch2][Branch1][Branch2][C][C][N][Branch2][Ring2][N][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][Br][C][C][=Branch1][C][=O][O][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an optically active twelve-membered tetraazamacrocycle having a carboxymethyl group attached to each of the nitrogens and a 4-(2-bromoacetamido)benzyl group at the 2-position. It is an azamacrocycle and a tetracarboxylic acid. It is functionally related to a DOTA."}]