Using CC(=O)c1ccc2c(c1)ncn2-c1cccc(N2CCN(C(C)=O)CC2)c1 to produce CC(=O)c1ccc2c(c1)ncn2-c1cccc(N2CCNCC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.