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