Using CCCCOc1cc(OCCCC)c(C(=O)OCC)c(C(F)(F)F)n1 to produce CCCCOc1cc(OCCCC)c(C(=O)O)c(C(F)(F)F)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.