InChI=1S/C25H28N2O4Si/c1-5-25(30)19-12-21-22-17(13-27(21)23(28)18(19)14-31-24(25)29)15(10-11-32(2,3)4)16-8-6-7-9-20(16)26-22/h6-9,12,30H,5,10-11,13-14H2,1-4H3/t25-/m0/s1