Using C=CCCNC(=O)C1(NC(=O)OC(C)(C)C)CC1, O=S(=O)(OCCOS(=O)(=O)C(F)(F)F)C(F)(F)F to produce C=CCCN1CCN(C(=O)OC(C)(C)C)C2(CC2)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.