Using CCOC(=O)Nc1cccc(Cn2nc(-c3cccc(C(=O)O)c3)ccc2=O)c1 to produce CCOC(=O)Nc1cccc(Cn2nc(-c3cccc(CO)c3)ccc2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.