Try searching for...
SCFBio, IIT Delhi
Formula: C17H16O6 | Mol. Weight: 316.30 g/mol
IUPAC: 4,5,9-trihydroxy-17-methoxy-11-oxatetracyclo[7.7.1.01,12.02,7]heptadeca-2,4,6,12,15-pentaen-14-one
COC1C2(CC3=CC(=C(C=C3C14C=CC(=O)C=C4OC2)O)O)O