Using CCCCCC(CC(=O)Nc1cc(C(=O)OC)ccc1C(C)(C)C)c1ccc(OC)cc1OC to produce CCCCCC(CC(=O)Nc1cc(C(=O)O)ccc1C(C)(C)C)c1ccc(OC)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.