Using CC(C)(C)OC(=O)NC(=O)OC(C)(C)C, COC(=O)c1cc(F)ccc1CBr to produce COC(=O)c1cc(F)ccc1CN(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.