Using BrCCOCCBr, Cc1cc(Br)cc(N)c1NC(=O)CC(C)(C)C to produce Cc1cc(Br)cc(N2CCOCC2)c1NC(=O)CC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.