Using CCc1nc2c(o1)CCc1cc(C)ccc1C2=O, CC(C)(C)Oc1ncc(Br)c(OC(C)(C)C)n1 to produce CCc1nc2c(o1)C=Cc1cc(C)ccc1C2c1c[nH]c(=O)[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.