InChI=1S/C20H36O3Si2/c1-6-7-8-9-13-18-21-24(2,3)23-25(4,5)22-19-14-17-20-15-11-10-12-16-20/h10-12,14-17H,6-9,13,18-19H2,1-5H3/b17-14+