InChI=1/C15H16N2O4S/c1-3-6-21-11-5-4-9(8-12(11)20-2)7-10-13(18)16-15(22)17-14(10)19/h4-5,7-8H,3,6H2,1-2H3,(H2,16,17,18,19,22)/p-1/fC15H15N2O4S/h16H/q-1/b10-7- 5FCAEA9337CB5F8B