InChI=1/C19H16N2O3/c1-2-20-16(9-7-14-5-3-4-6-18(14)20)10-8-15-13-17(21(23)24)11-12-19(15)22/h3-13H,2H2,1H3/p+1/fC19H17N2O3/h22H/q+1/b10-8+ 7ADFC2CF4C5B4C98