Using C=CC(=O)NNC(=O)OC(C)(C)C, COc1nc(Br)ccc1-n1cnc(C)c1 to produce COc1nc(/C=C/C(=O)NNC(=O)OC(C)(C)C)ccc1-n1cnc(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.