Using COc1cc2c(cn1)N(C(=O)OC(C)(C)C)C(=O)C2(C)C, C=C(C)CBr to produce C=C(C)Cn1cc2c(cc1=O)C(C)(C)C(=O)N2C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.