Using COC(=O)CC1Cc2ccc(S(=O)(=O)N3CCN(c4ccc(C(F)(F)F)cc4)CC3)cc2C1 to produce O=C(O)CC1Cc2ccc(S(=O)(=O)N3CCN(c4ccc(C(F)(F)F)cc4)CC3)cc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.