InChI=1S/C18H28O6S/c19-18(20)16-14-12-10-8-6-4-2-1-3-5-7-9-11-13-15-17-24-25(21,22)23/h3,5,7,9H,4,6,8,10-17H2,(H,19,20)(H,21,22,23)/b5-3-,9-7+