[CH3:1][C:2]([CH3:3])=[CH2:4].[cH:5]1[cH:6][cH:7][cH:8][cH:9][cH:10]1>>[CH3:1][C:2]([CH3:3])([CH3:4])[c:5]1[cH:6][cH:7][cH:8][cH:9][cH:10]1
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