InChI=1S/C22H31NO7S/c1-17(2)15-23-22(24)11-7-6-10-19(30-31(25,26)27)9-5-3-4-8-18-12-13-20-21(14-18)29-16-28-20/h4,6,8,10,12-14,17,19H,3,5,7,9,11,15-16H2,1-2H3,(H,23,24)(H,25,26,27)/b8-4+,10-6+