Using NCC(O)CO, CC(C)(C)OC(=O)N(CCCCCCCCCCCCCCCCBr)c1ccc(C(=O)n2ccnc2)cc1 to produce O=C(NCC(O)CO)c1ccc(NCCCCCCCCCCCCCCCCBr)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.