Try searching for...
SCFBio, IIT Delhi
Formula: C19H12O3 | Mol. Weight: 288.30 g/mol
IUPAC: 2,6-dihydroxy-9-phenylphenalen-1-one
C1=CC=C(C=C1)C2=C3C4=C(C=CC(=C4C=C2)O)C=C(C3=O)O