InChI=1/C13H16N2O4S/c1-19-7-6-15-9-4-2-3-5-10(9)20-11(13(15)17)8-12(16)14-18/h2-5,11,18H,6-8H2,1H3,(H,14,16)/t11-/m0/s1/f/h14H 497452C43C48A292