Using CC(C)(CNc1ccccc1Cl)NC(=O)OC(C)(C)C, O=C(Br)CBr to produce CC(C)(CN(C(=O)CBr)c1ccccc1Cl)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.