[{"from": "human", "value": "Describe this molecule. [C][C][=Branch2][Branch1][Ring2][=C][C][C][=C][Branch2][Ring2][O][C][=Branch2][Ring2][=Branch1][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][Branch1][Ring2][O][Ring1][#Branch1][C][=C][Branch1][P][C][=C][Ring1][#Branch1][O][C][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][O][O][O][C][C]"}, {"from": "gpt", "value": "The molecule is an organic heterotetracyclic compound that is 3,4-dihydro-2H,12H-pyrano[2,3-a]xanthen-12-one substituted by hydroxy groups at positions 5 and 9, a methoxy group at position 10, two methyl groups at position 2, a prenyl group at position 11 and an oxo group at position 12. It has a role as a plant metabolite. It is a member of phenols, an organic heterotetracyclic compound, a cyclic ketone and a cyclic ether."}]