[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch2][Branch1][Branch1][=C][C][C][=C][C][=Branch2][Ring1][S][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][C][=C][Branch1][Ring2][O][Ring1][=Branch2][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][#Branch1][O][O][C][=C][C][Branch1][Branch1][O][Ring2][Ring1][Branch1][Branch1][C][C][C][C]"}, {"from": "gpt", "value": "The molecule is a member of the class of pyranoxanthones that is 3H,7H-pyrano[2,3-c]xanthen-7-one substituted by hydroxy groups at positions 6, 10 and 11, geminal methyl groups at position 3 and a prenyl group at position 5. Isolated from Garcinia lancilimba, it exhibits inhibitory effects on human cancer cell line. It has a role as a metabolite and an antineoplastic agent. It is a member of pyranoxanthones and a polyphenol."}]