InChI=1S/C26H49NO3Si2/c1-25-14-12-19(29-31(4,5)6)16-18(25)10-11-20-21(25)13-15-26(2)22(20)17-23(24(26)27-28-3)30-32(7,8)9/h18-23H,10-17H2,1-9H3/t18-,19+,20?,21?,22?,23-,25+,26+/m0/s1