Using CCOC(=O)c1ccc(OCCCc2c(N)nc(N)[nH]c2=O)cc1 to produce Nc1nc(N)c(CCCOc2ccc(C(=O)O)cc2)c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.