Using CC(=O)C(C)(C)C, CCOC(=O)c1nn(-c2ccc(Cl)cc2Cl)c(-c2ccc(Cl)cc2)c1C to produce Cc1c(C(=O)/C=C(\O)C(C)(C)C)nn(-c2ccc(Cl)cc2Cl)c1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.