Using CCN(CC)C(=O)[C@@H]1C=C2c3cccc4c3c(cn4CCCN3C(=O)c4ccccc4C3=O)C[C@H]2N(C)C1 to produce CCN(CC)C(=O)[C@@H]1C=C2c3cccc4c3c(cn4CCCN)C[C@H]2N(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.