Using CN1CCC(O)N(c2nnc(C(F)(F)F)s2)C1=O, CC(=O)OC(C)=O to produce CC(=O)OC1CCN(C)C(=O)N1c1nnc(C(F)(F)F)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.