Using Nc1ccc2cn[nH]c2c1, Clc1nc(NCCCN2CCOCC2)c2cc[nH]c2n1 to produce c1cc2c(NCCCN3CCOCC3)nc(Nc3ccc4cn[nH]c4c3)nc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.