InChI=1/C13H13N3O4S/c1-8-15-5-12(13(14)16-8)21(17,18)6-9-2-3-10-11(4-9)20-7-19-10/h2-5H,6-7H2,1H3,(H2,14,15,16)/f/h14H2 9E13021F14AEB177