InChI=1S/C26H47NO2Si/c1-24(2,3)30(7,8)29-19-13-15-25(4)18(17-19)9-10-20-21-11-12-23(27-28-6)26(21,5)16-14-22(20)25/h18-22H,9-17H2,1-8H3/t18-,19+,20?,21?,22?,25-,26-/m1/s1