InChI=1/C16H14N2O4S/c1-11-2-6-13(7-3-11)18-15(10-22-16(18)19)12-4-8-14(9-5-12)23(17,20)21/h2-10H,1H3,(H2,17,20,21)/f/h17H2 1BC369AB871229F2