Formula: C23H28O5 | Mol. Weight: 384.50 g/mol
IUPAC: (1S,7S,9S,11R,12S,13S,17S)-4,12,16,16-tetramethyl-8-methylidene-17-[(E)-3-oxobut-1-enyl]-2,14,15-trioxapentacyclo[11.4.0.01,5.07,12.09,11]heptadec-4-en-3-one
CC1=C2CC3C(=C)C4CC4C3(C5C2(C(C(OO5)(C)C)C=CC(=O)C)OC1=O)C