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