InChI=1S/C21H38O2Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21(22)23-24(2,3)4/h6-7,9-10,12-13H,5,8,11,14-20H2,1-4H3/b7-6-,10-9-,13-12-