[{"from": "human", "value": "Please give me some details about this molecule. [C][C][Branch2][Ring2][=Branch2][C][C][C][=C][Branch1][Ring2][O][Ring1][=Branch1][C][=Branch2][Ring1][O][=C][C][=C][Ring1][#Branch1][C][=Branch1][C][=O][C][=C][Branch1][=N][C][=C][Branch1][Branch2][C][=C][Ring1][=Branch1][O][Ring1][O][O][O][O][C]"}, {"from": "gpt", "value": "The molecule is a pyranoxanthene that is 2,3-dihydropyrano[3,2-a]xanthen-12(1H)-one substituted by hydroxy groups at positions 5, 9 and 11 and geminal methyl groups at position 3. Isolated from the aerial parts of Hypericum scabrum, it exhibits cytotoxicity for human tumour cells. It has a role as a metabolite and an antineoplastic agent. It is a pyranoxanthene, a polyphenol and a cyclic ketone."}]