Using Nc1nc(C2CCNCC2)c2ccccc2n1, O=C(O)Cc1ccc(O)c(O)c1 to produce Nc1nc(C2CCN(C(=O)Cc3ccc(O)c(O)c3)CC2)c2ccccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.