Using C[O-], CS(=O)(=O)c1ncc(C2(O)CCC(N3CC(NC(=O)CNC(=O)c4cccc(C(F)(F)F)c4)C3)CC2)s1 to produce COc1ncc(C2(O)CCC(N3CC(NC(=O)CNC(=O)c4cccc(C(F)(F)F)c4)C3)CC2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.