InChI=1S/C25H34N2O4Si/c1-27-21-11-12-22(27)15-23(14-21)31-25(28)24(20-9-5-4-6-10-20)18-30-32(2,3)29-17-19-8-7-13-26-16-19/h4-10,13,16,21-24H,11-12,14-15,17-18H2,1-3H3