Using COC(=O)C1(CN2C=CN(C(=O)OCc3ccccc3)CC2=O)CCN(C(C)=O)CC1 to produce COC(=O)C1(CN2CCNCC2=O)CCN(C(C)=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.