Try searching for...
SCFBio, IIT Delhi
Formula: C15H12O5 | Mol. Weight: 272.25 g/mol
IUPAC: (12R,16S)-9-methoxy-15-methylidene-3,11,13-trioxatetracyclo[8.6.0.02,7.012,16]hexadeca-1,5,7,9-tetraen-4-one
COC1=C2C(=C3C(=C1)C=CC(=O)O3)C4C(O2)OCC4=C