Using CCOC(=O)CCc1ccnc(COc2ccc(-c3cc(OC)ccc3F)c(CC(C)(C)C)c2)c1 to produce COc1ccc(F)c(-c2ccc(OCc3cc(CCC(=O)O)ccn3)cc2CC(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.