SMILES: CC1(CCC2=C(O1)C(=CC3=C2C(=O)C4=C(C=C(C=C4O3)O)O)O)C
Description: 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.