[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=C][C@H1][C][=C][Branch1][#Branch2][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][O][C@@][Branch1][Ring2][C][Ring1][=N][C@@][Ring1][N][Branch1][O][C][=Branch1][C][=O][C][=C][C][Ring1][Branch2][=O][C][C][=C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is an organic heterotetracyclic compound that is 9,9a-dihydro-9,4a-prop[1]enoxanthene-1,4-dione substituted by a hydroxy group at position 7, a methyl group at position 12 and a prenyl group at position 9a. Isolated from the root barks of Ehretia buxifolia, it exhibits antisnake venom activity. It has a role as a metabolite and an antidote. It is an organic heterotetracyclic compound, a cyclic ketone, a cyclic ether and a member of phenols."}]