InChI=1S/C27H46O4Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-20-23-30-26(28)24-21-18-19-22-25(24)27(29)31-32(2,3)4/h18-19,21-22H,5-17,20,23H2,1-4H3