Ethyl cyanoacetate → Ethyl 2-cyano-4-(2,6-difluorophenyl)-4-oxobutanoate

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[Br:18][CH2:19][C:20](=[O:21])[c:22]1[c:23]([F:29])[cH:24][cH:25][cH:26][c:27]1[F:28].[C:1](#[N:2])[CH2:3][C:4](=[O:5])[O:6][CH2:7][CH3:8].[CH:9]([N:10]([CH:11]([CH3:12])[CH3:13])[CH2:14][CH3:15])([CH3:16])[CH3:17].[O:30]1[CH2:31][CH2:32][CH2:33][CH2:34]1>>[C:1](#[N:2])[CH:3]([C:4](=[O:5])[O:6][CH2:7][CH3:8])[CH2:19][C:20](=[O:21])[c:22]1[c:23]([F:29])[cH:24][cH:25][cH:26][c:27]1[F:28]