Using CCCN(C(=O)C(F)(F)F)N(C(=O)OC(C)(C)C)c1cccc(C#N)c1 to produce CCCNN(C(=O)OC(C)(C)C)c1cccc(C#N)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.