InChI=1S/C17H42O5Si4/c1-23(2,3)19-14-13-18-17(22-26(10,11)12)16(21-25(7,8)9)15(14)20-24(4,5)6/h14-17H,13H2,1-12H3/t14-,15?,16+,17+/m0/s1