[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Ring1][=C][=C][Branch1][Branch1][C][Ring1][P][=O][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a cyclic ketone. It derives from a hydride of a cyclopenta[l]phenanthrene."}]