InChI=1S/C19H20O10S/c1-4-10(2)18(22)28-19(3,9-20)17-16(29-30(23,24)25)14-12(26-17)7-5-11-6-8-13(21)27-15(11)14/h4-8,16-17,20H,9H2,1-3H3,(H,23,24,25)