Pyridine → N-((4aS,5S,7aS)-7a-(2,3-difluorophenyl)-5-((trityloxy)methyl)-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)benzamide

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[F:1][C:2]1C(F)=[CH:6][CH:5]=[CH:4][C:3]=1[C@@:9]1([NH:37][C:38]([NH:40][C:41](=[O:48])[C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=2)=[S:39])[C@H:13]([CH2:14]O)[C@@H:12]([CH2:16][O:17][C:18]([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=2)([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[O:11][CH2:10]1.N1C=CC=CC=1.F[C:56]([F:69])(F)S(OS(C(F)(F)F)(=O)=O)(=O)=O>C(Cl)Cl>[F:1][C:2]1[C:56]([F:69])=[CH:6][CH:5]=[CH:4][C:3]=1[C@:9]12[CH2:10][O:11][C@H:12]([CH2:16][O:17][C:18]([C:19]3[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=3)([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][CH:32]=3)[C:25]3[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=3)[C@H:13]1[CH2:14][S:39][C:38]([NH:40][C:41](=[O:48])[C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1)=[N:37]2