Using CC(C)(C)c1ccccc1N1CCN(C(=O)CC2CC(=O)NC(=O)C2)CC1, COC(=O)CBr to produce COC(=O)CN1C(=O)CC(CC(=O)N2CCN(c3ccccc3C(C)(C)C)CC2)CC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.