InChI=1/C21H13ClN2O4S/c22-14-8-10-15(11-9-14)29(27,28)23-18-19(24-12-4-1-5-13-24)21(26)17-7-3-2-6-16(17)20(18)25/h1-13H/p+1/fC21H14ClN2O4S/h23H/q+1 3E5F0B844C45828C