SMILES: CC1=C(C2=C(C3=C1OC4=C(C3C5=CC=CC=C5)C(=O)C(C(=O)C4(C)C)(C)C)O[C@@H](CC2=O)C6=CC=CC=C6)O
Description: The molecule is an organic heterotetracyclic compound that is 8,12-dihydro-2H,9H-pyrano[2,3-a]xanthene-4,9,11(3H,10H)-trione substituted by methyl groups at positions 6, 8, 8, 10 and 10 and phenyl groups at positions 2 and 12 respectively (the S-enantiomer). It is isolated from the leaves of Baeckea frutescens and exhibits cytotoxicity against leukemia cells. It has a role as a metabolite and an antineoplastic agent. It is an extended flavonoid, an organic heterotetracyclic compound and a member of phenols.