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