[{"from": "human", "value": "What can you tell me about this molecule? [C][O][C][=C][C][=Branch1][S][=C][C@@H1][C][=C][O][C@@H1][Ring1][Branch1][O][C][Ring1][Branch2][=C][Ring1][N][O][C][=C][C][=C][C][=Branch1][=Branch2][=C][Ring1][=Branch1][C][Ring2][Ring1][Ring1][=O][O]"}, {"from": "gpt", "value": "The molecule is an organic heteropentacyclic compound whose skeleton comprises a xanthene ring system ortho-fused to a dihydrofuranofuran moiety. The parent of the class of sterigmatocystins. It has a role as a metabolite. It is functionally related to a dihydrodemethylsterigmatocystin."}]