Using COC(=O)/C=C/c1ccc(-c2ccc(C(C)(C)C)cc2)s1 to produce CC(C)(C)c1ccc(-c2ccc(/C=C/C(=O)O)s2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.