InChI=1/C12H16N2O4S/c13-9-5-7-10(8-6-9)19(17,18)12-4-2-1-3-11(12)14(15)16/h1-4,9-10H,5-8,13H2/p+1/fC12H17N2O4S/h13H/q+1 DD5761306A9BC6CF