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