Using CCCCCCCCCCCCCCCCNc1ccc(C(=O)NCC(=O)OCC)c(F)c1 to produce CCCCCCCCCCCCCCCCNc1ccc(C(=O)NCC(=O)O)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.