Using COC(=O)C(N)P(=O)(OC)OC, O=C(NCc1cccc(O)c1)c1ccc(C(=O)O)c(Br)c1 to produce COC(=O)C(NC(=O)c1ccc(C(=O)NCc2cccc(O)c2)cc1Br)P(=O)(OC)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.