InChI=1/C18H20N2O6S/c1-13(2)19(12-14-7-9-16(10-8-14)20(22)23)27(24,25)17-6-4-5-15(11-17)18(21)26-3/h4-11,13H,12H2,1-3H3 D42E016CEFC48F67