[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=C][Ring1][#Branch1][C][Branch1][O][C][=C][C][=C][C][=C][Ring1][=Branch2][Ring1][=Branch1][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a carbotetracyclic compound that is 11H-benzo[a]fluorene substituted by a carboxymethyl group at position 11. It is a monocarboxylic acid and a carbotetracyclic compound. It derives from a hydride of a Benzo[a]fluorene."}]