Using COC(=O)c1ccc(N2CCNC2=O)cc1, CC(C)(C)c1ccc(CBr)cc1 to produce COC(=O)c1ccc(N2CCN(Cc3ccc(C(C)(C)C)cc3)C2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.