[{"from": "human", "value": "Please give me some details about this molecule. [C][C@H1][Branch2][=Branch1][#C][C@H1][Branch2][Branch1][=N][O][C][=C][Ring1][=Branch1][C][=Branch2][Branch1][Ring1][=C][C][=Branch2][Ring2][=N][=C][Ring1][=Branch1][C@H1][C@@H1][Branch2][Ring2][Ring2][C@H1][Branch2][Ring1][C][O][C][=C][C][=Branch1][O][=C][C][=Branch1][=Branch1][=C][Ring1][#Branch2][Ring1][=Branch1][O][O][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][O][O][O][C][=C][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][O]"}, {"from": "gpt", "value": "The molecule is a proanthocyanidin obtained by the condensation of (-)-epicatechin and (+)-catechin units. It has a role as an antioxidant, an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor and an antineoplastic agent. It is a proanthocyanidin and a hydroxyflavan. It is functionally related to a (-)-epicatechin and a (+)-catechin."}]