InChI=1S/C21H50N2O6Si4/c1-17(24)23-18(15-22-25-2)20(28-32(9,10)11)21(29-33(12,13)14)19(27-31(6,7)8)16-26-30(3,4)5/h15,18-21H,16H2,1-14H3,(H,23,24)