InChI=1/C17H14N2O3S/c1-10-3-2-4-11(5-10)6-16(20)19-17-18-12-7-13-14(22-9-21-13)8-15(12)23-17/h2-5,7-8H,6,9H2,1H3,(H,18,19,20)/f/h19H 8C2EF31A7206E45E