InChI=1S/C27H28O5/c1-16(2)5-8-19-13-18(7-11-22(19)28)14-24-26(30)25(27(31)32-24)21-10-12-23(29)20(15-21)9-6-17(3)4/h5-7,10-15,28-30H,8-9H2,1-4H3/b24-14-