Using CC1(C)CCNC(=O)c2nc3ccc(C(=O)OCc4ccccc4)cc3n21 to produce CC1(C)CCNC(=O)c2nc3ccc(C(=O)O)cc3n21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.