Using CCOC(=O)c1cc2ccc(N3CCN(C(=O)OC(C)(C)C)CC3)cc2cn1, O=C1CCC(=O)N1Br to produce CCOC(=O)c1cc2ccc(N3CCN(C(=O)OC(C)(C)C)CC3)c(Br)c2cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.