Benzoyl chloride → 1-tert-butyl 4-((3aR,5aR,5bR,7aR,9S,11aR,11bR,13aS)-3a-formyl-1-isopropyl-5a,5b,8,8,11a-pentamethyl-2-oxo-3,3a,4,5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a-octadecahydro-2H-cyclopenta[a]chrysen-9-yl) 2,2-dimethylsuccinate

Reaction equation

[OH:1][C@H:2]1[CH2:19][CH2:18][C@@:17]2([CH3:20])[C@@H:4]([CH2:5][CH2:6][C@:7]3([CH3:31])[C@@H:16]2[CH2:15][CH2:14][C@H:13]2[C@@:8]3([CH3:30])[CH2:9][CH2:10][C@@:11]3([CH:28]=[O:29])[CH2:23][C:22](=[O:24])[C:21]([CH:25]([CH3:27])[CH3:26])=[C:12]32)[C:3]1([CH3:33])[CH3:32].[C:34]([O:38][C:39](=[O:47])[C:40]([CH3:46])([CH3:45])[CH2:41][C:42](O)=[O:43])([CH3:37])([CH3:36])[CH3:35].C(Cl)(=O)C1C=CC=CC=1.C(N(CC)CC)C>CN(C1C=CN=CC=1)C.O.C(OCC)(=O)C.C1COCC1>[CH3:45][C:40]([CH3:46])([CH2:41][C:42]([O:1][C@H:2]1[CH2:19][CH2:18][C@@:17]2([CH3:20])[C@@H:4]([CH2:5][CH2:6][C@:7]3([CH3:31])[C@@H:16]2[CH2:15][CH2:14][C@H:13]2[C@@:8]3([CH3:30])[CH2:9][CH2:10][C@@:11]3([CH:28]=[O:29])[CH2:23][C:22](=[O:24])[C:21]([CH:25]([CH3:27])[CH3:26])=[C:12]32)[C:3]1([CH3:32])[CH3:33])=[O:43])[C:39]([O:38][C:34]([CH3:35])([CH3:36])[CH3:37])=[O:47]