InChI=1/C18H13NOS/c20-18-13(11-21-17-8-4-2-6-15(17)18)9-12-10-19-16-7-3-1-5-14(12)16/h1-9H,10-11H2/p+1/b13-9-/fC18H14NOS/h19H/q+1 B3273C44EBBA0B3C