Using COC(=O)c1cccc(N2CN(c3ccccc3)C3(CCN(C(=O)OCc4ccccc4)CC3)C2=O)c1 to produce COC(=O)c1cccc(N2CN(c3ccccc3)C3(CCNCC3)C2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.