InChI=1S/C16H19N3O4S/c1-24-7-6-12(17)15-18-13(16(23)19(15)9-14(21)22)8-10-2-4-11(20)5-3-10/h2-5,8,12,20H,6-7,9,17H2,1H3,(H,21,22)/b13-8-/t12-/m0/s1