Using CCCCOc1nc(N)c2nc(OC)n(CCCN)c2n1, O=Cc1ccc(CC(=O)O)cc1 to produce CCCCOc1nc(N)c2nc(OC)n(CCCNCc3ccc(CC(=O)O)cc3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.