Using COC(=O)C(OC(=O)N1CCN(C(c2ccc(Cl)cc2)c2ccc(Cl)cc2)CC1)C(F)(F)F to produce O=C(O)C(OC(=O)N1CCN(C(c2ccc(Cl)cc2)c2ccc(Cl)cc2)CC1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.