Methanesulfonyl chloride → tert-butyl (6R,7R)-7-[[(2Z)-2-methoxyimino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino]-3-(oxan-2-yl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

Reaction equation

S(Cl)(C)(=O)=O.Cl.[CH3:7][O:8]/[N:9]=[C:10](/[C:14]1[N:15]=[C:16]([NH:19][C:20]([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[S:17][CH:18]=1)\[C:11](O)=[O:12].C(N(CC)C(C)C)(C)C.[NH2:48][C@@H:49]1[C:69](=[O:70])[N:51]2[C:52]([C:62]([O:64][C:65]([CH3:68])([CH3:67])[CH3:66])=[O:63])=[C:53]([CH:56]3[CH2:61][CH2:60][CH2:59][CH2:58][O:57]3)[CH2:54][S:55][C@H:50]12>CN(C=O)C.N1C=CC=CC=1>[CH3:7][O:8]/[N:9]=[C:10](/[C:14]1[N:15]=[C:16]([NH:19][C:20]([C:27]2[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=2)([C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=2)[S:17][CH:18]=1)\[C:11]([NH:48][C@@H:49]1[C:69](=[O:70])[N:51]2[C:52]([C:62]([O:64][C:65]([CH3:66])([CH3:68])[CH3:67])=[O:63])=[C:53]([CH:56]3[CH2:61][CH2:60][CH2:59][CH2:58][O:57]3)[CH2:54][S:55][C@H:50]12)=[O:12]