InChI=1/C20H17N3O4S/c1-9-4-5-14(28-9)16-15-11(21-18-17(16)19(25)23-20(26)22-18)7-10(8-12(15)24)13-3-2-6-27-13/h2-6,10,16H,7-8H2,1H3,(H3,21,22,23,25,26)/t10-,16-/m0/s1/f/h21-23H 6F388C690E367245