Using C=CB(OCCCC)OCCCC, CC(C)(C)OC(=O)Nc1ccccc1NC(=O)c1cc2cc(Br)ccc2o1 to produce C=Cc1ccc2oc(C(=O)Nc3ccccc3NC(=O)OC(C)(C)C)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.