Using COC(=O)c1ccc(CCc2c[nH]c3nc(N)[nH]c(=O)c23)cc1 to produce Nc1nc2[nH]cc(CCc3ccc(C(=O)O)cc3)c2c(=O)[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.