Using NC1(C(=O)O)CC1, COC(=O)c1cccc2c1NC(c1cccc(Br)c1)CC2(C)C to produce CC1(C)CC(c2cccc(NC3(C(=O)O)CC3)c2)Nc2c(C(=O)O)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.