Using COc1ccc(COc2ccc(-c3cc(OC)ccc3F)c(C(O)CCC(C)(C)C)c2)cc1 to produce COc1ccc(F)c(-c2ccc(O)cc2CCCC(C)(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.