Using COC1(c2ccccc2)CCN(c2ccc(N3CCN(C(C)=O)CC3)cc2)CC1 to produce COC1(c2ccccc2)CCN(c2ccc(N3CCNCC3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.