Using CCC(C(=CCCCCCCCCCC(=O)NC)c1ccc(OC)cc1)c1ccc(OC)cc1 to produce CCC(=C(CCCCCCCCCCC(=O)NC)c1ccc(O)cc1)c1ccc(O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.