InChI=1S/C29H54O2Si/c1-20(2)10-9-11-21(3)24-14-15-25-23-13-12-22-18-27(31-32(6,7)8)30-19-29(22,5)26(23)16-17-28(24,25)4/h20-27H,9-19H2,1-8H3/t21?,22?,23?,24-,25?,26?,27-,28-,29+/m0/s1