Potassium Carbonate → 1-(acetyloxy)ethyl (2R)-(2,4-difluorophenyl)[(3R,6R)-3-(2,3-dihydro-1H-inden-2-yl)-6-isobutyl-2,5-dioxopiperazin-1-yl]ethanoate

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[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[C@@H:9]([N:13]1[C@H:18]([CH2:19][CH:20]([CH3:22])[CH3:21])[C:17](=[O:23])[NH:16][C@H:15]([CH:24]2[CH2:32][C:31]3[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=3)[CH2:25]2)[C:14]1=[O:33])[C:10]([OH:12])=[O:11].C(=O)([O-])[O-].[K+].[K+].[C:40]([O:43][CH:44](Br)[CH3:45])(=[O:42])[CH3:41]>CN(C=O)C>[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[C@@H:9]([N:13]1[C@H:18]([CH2:19][CH:20]([CH3:22])[CH3:21])[C:17](=[O:23])[NH:16][C@H:15]([CH:24]2[CH2:32][C:31]3[C:26](=[CH:27][CH:28]=[CH:29][CH:30]=3)[CH2:25]2)[C:14]1=[O:33])[C:10]([O:12][CH:44]([O:43][C:40](=[O:42])[CH3:41])[CH3:45])=[O:11]