Using COC(=O)C12CN(Cc3ccccc3)CC1C(O)(c1ccccc1C)CCC2c1ccccc1 to produce COC(=O)C12CN(Cc3ccccc3)CC1=C(c1ccccc1C)CCC2c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.