Try searching for...
SCFBio, IIT Delhi
Formula: C20H20O4 | Mol. Weight: 324.40 g/mol
IUPAC: (11bS)-7,11-dihydroxy-4,4,9,11b-tetramethyl-1H-naphtho[2,1-f][1]benzofuran-6-one
CC1=CC2=C(C3=C(C(=C2O1)O)C4(CC=CC(C4=CC3=O)(C)C)C)O