InChI=1S/C20H28O6S/c1-14(7-6-8-15(2)11-19(21)22)9-10-18-16(3)12-17(13-20(18,4)5)26-27(23,24)25/h6-11,17H,12-13H2,1-5H3,(H,21,22)(H,23,24,25)/b8-6+,10-9+,14-7+,15-11+