InChI=1S/C27H46N2O4Si/c1-7-10-13-16-24(28-31-8-2)21-19-23-20-22-26(29-32-9-3)25(23)17-14-11-12-15-18-27(30)33-34(4,5)6/h11,14,19-23,25H,7-10,12-13,15-18H2,1-6H3/b14-11-,21-19+,28-24?,29-26?/t23-,25+/m1/s1