Formula: C27H28O5 | Mol. Weight: 432.50 g/mol
IUPAC: (16R,17S,18R)-18-ethoxy-10,10,16,17-tetramethyl-6-phenyl-3,9,15-trioxatetracyclo[12.4.0.02,7.08,13]octadeca-1(14),2(7),5,8(13),11-pentaen-4-one
CCOC1C(C(OC2=C1C3=C(C(=CC(=O)O3)C4=CC=CC=C4)C5=C2C=CC(O5)(C)C)C)C