1 FU9 3-(cyclopropylamino)-5-{[3-(trifluoromethyl)phenyl]amino}pyrimido[4,5-C]quinoline-8-carboxylic acid 1.000 2 E1B 5-[(3-ethynylphenyl)amino]pyrimido[4,5-C]quinoline-8-carboxylic acid 0.758