Using COC(=O)C[P+](c1ccccc1)(c1ccccc1)c1ccccc1, COC(=O)c1nc2c(s1)C(=O)COc1ccc(Br)cc1-2 to produce COC(=O)/C=C1\COc2ccc(Br)cc2-c2nc(C(=O)OC)sc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.