1 AVT 2-[9-fluoranyl-5-(4-methoxyphenyl)-3-methyl-1-oxidanylidene-pyrimido[4,5-C]quinolin-2-yl]ethanoic acid 1.000 2 AW8 2-[(1~{R})-5-(4-chlorophenyl)-9-fluoranyl-3-methyl-1-oxidanyl-1~{H}-pyrimido[4,5-C]quinolin-2-yl]ethanoic acid 0.900 3 AV5 2-[5-(4-chlorophenyl)-3-methyl-1-oxidanylidene-pyrimido[4,5-C]quinolin-2-yl]ethanoic acid 0.867