Using C[C@@H]1C[C@H]1C(=O)Nc1snc(-c2ccc3nn(C)cc3c2)c1Br, COc1cccc([Zn+])n1 to produce COc1cccc(-c2c(-c3ccc4nn(C)cc4c3)nsc2NC(=O)[C@@H]2C[C@H]2C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.