InChI=1S/C27H34O6/c1-18(2)23(27(5,6)17-32-24(28)19(3)4)33-26(30)22-15-11-10-14-21(22)25(29)31-16-20-12-8-7-9-13-20/h7-15,18-19,23H,16-17H2,1-6H3