Using Cn1c(C#N)cc(Br)c1-c1ccc2c(c1)C(C)(C)OC(=O)N2C(=O)OC(C)(C)C to produce Cn1c(C#N)cc(Br)c1-c1ccc2c(c1)C(C)(C)OC(=O)N2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.