Using CC(=O)N1CCc2c(C)c(CN(C)C)c(C)c(NC(=O)C(C)(C)C)c21 to produce Cc1c(CN(C)C)c(C)c(NC(=O)C(C)(C)C)c2c1CCN2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.