Using CC(C)=CCBr, COC(=O)c1nc(Br)[nH]c1C(=O)OC to produce COC(=O)c1nc(Br)n(CC=C(C)C)c1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.