InChI=1S/C19H17NO9S/c1-11(29-30(25,26)27)10-15(12-6-8-13(9-7-12)20(23)24)17-18(21)14-4-2-3-5-16(14)28-19(17)22/h2-9,11,15,21H,10H2,1H3,(H,25,26,27)