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