InChI=1S/C20H28O5S/c1-15(7-6-8-16(2)11-12-21)9-10-19-17(3)13-18(14-20(19,4)5)25-26(22,23)24/h6-12,18H,13-14H2,1-5H3,(H,22,23,24)/b8-6+,10-9+,15-7+,16-11+