InChI=1S/C20H24O7S/c1-26-20(14-18(22)10-4-15-2-8-17(21)9-3-15)13-7-16-5-11-19(12-6-16)27-28(23,24)25/h2-3,5-6,8-9,11-12,20-21H,4,7,10,13-14H2,1H3,(H,23,24,25)