Methyl chlorodifluoroacetate → 5-n-Butyl-4-[[2'-(N-t-butylsulfamoyl)biphenyl-4-yl]methyl]-2,4-dihydro-2-[5-nitro-2-(trifluoromethyl)phenyl]-3H-1,2,4-triazol-3-one

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Br[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][C:3]=1[N:11]1[C:15](=[O:16])[N:14]([CH2:17][C:18]2[CH:23]=[CH:22][C:21]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=3[S:30](=[O:37])(=[O:36])[NH:31][C:32]([CH3:35])([CH3:34])[CH3:33])=[CH:20][CH:19]=2)[C:13]([CH2:38][CH2:39][CH2:40][CH3:41])=[N:12]1.[F-:42].[K+].Cl[C:45]([F:51])([F:50])C(OC)=O>CN(C=O)C.O>[CH2:38]([C:13]1[N:14]([CH2:17][C:18]2[CH:23]=[CH:22][C:21]([C:24]3[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=3[S:30](=[O:36])(=[O:37])[NH:31][C:32]([CH3:34])([CH3:33])[CH3:35])=[CH:20][CH:19]=2)[C:15](=[O:16])[N:11]([C:3]2[CH:4]=[C:5]([N+:8]([O-:10])=[O:9])[CH:6]=[CH:7][C:2]=2[C:45]([F:51])([F:42])[F:50])[N:12]=1)[CH2:39][CH2:40][CH3:41]