InChI=1/C17H14N2O3S/c20-15(19-17-18-12-6-2-4-8-14(12)23-17)11-9-10-5-1-3-7-13(10)22-16(11)21/h1,3,5,7,9H,2,4,6,8H2,(H,18,19,20)/f/h19H B4671FBD005855FB