InChI=1/C13H14N3O4S/c1-8-4-9(2)6-10(5-8)16-21(18,19)12-11(7-14-15-12)13(17)20-3/h4-7H,1-3H3,(H,14,15,17)/q-1/f/h14H C3649F1354BF7E84