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