[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch2][Branch1][=Branch2][C][=C][C][=C][Branch2][Ring2][P][C][=C][Branch2][Ring1][#Branch2][C][=Branch1][#Branch1][=C][Ring1][=Branch1][O][Ring1][#Branch2][C][C][Branch1][N][C@H1][C][Branch1][Ring2][O][Ring1][Ring1][Branch1][C][C][C][O][O][C][=C][Branch1][Branch1][C][Ring1][P][=O][C][=C][Branch1][Branch1][C][=C][Ring1][Branch2][O][O][C]"}, {"from": "gpt", "value": "The molecule is a member of the class of pyranoxanthones that is 2H,6H-pyrano[3,2-b]xanthen-6-one substituted by a 2-[(2S)-3,3-dimethyloxiran-2-yl]-2-hydroxyethyl group at position 12, hydroxy groups at positions 5 and 8 and geminal methyl groups at position 2. It is isolated from the stem bark of Calophyllum brasiliense and exhibits significant inhibitory activity against 12-O-tetradecanoylphorbol-13-acetate induced Epstein-Barr virus early antigen activation in Raji cells. It has a role as a metabolite and an antineoplastic agent. It is a polyphenol, a member of pyranoxanthones, an epoxide and a secondary alcohol."}]