InChI=1S/C19H18O10S/c1-10(20)28-18-15(26-2)8-14(21)16-17(22)12(9-27-19(16)18)7-11-3-5-13(6-4-11)29-30(23,24)25/h3-6,8,12,21H,7,9H2,1-2H3,(H,23,24,25)