InChI=1/C18H16N2O3S/c1-10-6-11(2)8-13(7-10)23-17(22)12-4-5-14-15(9-12)19-18(24)20(3)16(14)21/h4-9,21H,1-3H3/p-1/fC18H15N2O3S/h21h/q-1 95ED70AA63EE7C1E