InChI=1/C16H15N3O4S/c1-9-18-12(8-24-9)15(20)11(7-17)16(21)19-10-4-5-13(22-2)14(6-10)23-3/h4-6,8,19,21H,1-3H3/p-1/b16-11+/fC16H14N3O4S/h21h/q-1 9FEE0C16C286EAE1