InChI=1S/C19H18O9S/c1-10(9-27-29(23,24)25)3-5-12-14(26-2)8-16-17(18(12)21)19(22)13-6-4-11(20)7-15(13)28-16/h3-4,6-8,20-21H,5,9H2,1-2H3,(H,23,24,25)