InChI=1S/C27H42O6Si4/c1-34(2,3)30-20-15-13-19(14-16-20)26-27(33-37(10,11)12)25(28)24-22(29-26)17-21(31-35(4,5)6)18-23(24)32-36(7,8)9/h13-18H,1-12H3