Using COc1ccc(Br)cn1, CC(C)(C)OC(=O)N1CCC(=O)C1 to produce COc1ccc(C2(O)CCN(C(=O)OC(C)(C)C)C2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.