Sodium borohydride → ethyl (2S)-2-(tert-butoxy)-2-{4,24-dimethyl-11,23-dioxa-1,5,7,8-tetraazapentacyclo[22.2.2.16,9.113,17.02,7]triaconta-2,4,6(30),8,13(29),14,16-heptaen-3-yl}acetate

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[CH2:1]([O:4][C:5]1([CH3:45])[CH2:10][CH2:9][N:8]([C:11]2[N:16]3[N:17]=[C:18]([CH2:20][O:21][CH2:22][C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([CH2:29][CH2:30][CH:31]=C)[CH:24]=4)[CH:19]=[C:15]3[N:14]=[C:13]([CH3:33])[C:12]=2[C@H:34]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])[C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:7][CH2:6]1)[CH:2]=C.[BH4-].[Na+]>Cl[Ru](=C1N(C2C(C)=CC(C)=CC=2C)CCN1C1C(C)=CC(C)=CC=1C)(Cl)(=CC1C=CC=CC=1)[P](C1CCCCC1)(C1CCCCC1)C1CCCCC1.C(Cl)Cl>[C:41]([O:40][C@@H:34]([C:12]1[C:13]([CH3:33])=[N:14][C:15]2=[CH:19][C:18]3=[N:17][N:16]2[C:11]=1[N:8]1[CH2:7][CH2:6][C:5]([CH3:45])([O:4][CH2:1][CH2:2][CH2:31][CH2:30][CH2:29][C:25]2[CH:24]=[C:23]([CH2:22][O:21][CH2:20]3)[CH:28]=[CH:27][CH:26]=2)[CH2:10][CH2:9]1)[C:35]([O:37][CH2:38][CH3:39])=[O:36])([CH3:43])([CH3:42])[CH3:44]