Using CN(C)C(=O)c1nc(C(F)(F)F)n2c1CN(C(=O)OC(C)(C)C)CC2 to produce CN(C)C(=O)c1nc(C(F)(F)F)n2c1CNCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.