p-Bromobenzenesulfonyl chloride → (1aR,3aR,5R,7aR,15aS,Z)-methyl 5-(4-bromophenylsulfonyloxy)-9-methyl-3,8-dioxo-1a,2,3,3a,4,5,6,7,7a,8,9,10,11,12,13,15a-hexadecahydro-1H-benzo[c]cyclopropa[g][1,6]diazacyclotetradecine-1a-carboxylate

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[OH:1][C@@H:2]1[CH2:27][CH2:26][C@H:5]2[C:6](=[O:25])[N:7]([CH3:24])[CH2:8][CH2:9][CH2:10][CH2:11][CH:12]=[CH:13][C@@H:14]3[CH2:19][C@@:15]3([C:20]([O:22][CH3:23])=[O:21])[NH:16][C:17](=[O:18])[C@@H:4]2[CH2:3]1.[Br:28][C:29]1[CH:34]=[CH:33][C:32]([S:35](Cl)(=[O:37])=[O:36])=[CH:31][CH:30]=1>CN(C1C=CN=CC=1)C.C(Cl)Cl>[Br:28][C:29]1[CH:34]=[CH:33][C:32]([S:35]([O:1][C@@H:2]2[CH2:27][CH2:26][C@H:5]3[C:6](=[O:25])[N:7]([CH3:24])[CH2:8][CH2:9][CH2:10][CH2:11][CH:12]=[CH:13][C@@H:14]4[CH2:19][C@@:15]4([C:20]([O:22][CH3:23])=[O:21])[NH:16][C:17](=[O:18])[C@@H:4]3[CH2:3]2)(=[O:37])=[O:36])=[CH:31][CH:30]=1