Using O=C(O)c1ccc(F)c(Cl)c1F, CN(C)C(OC(C)(C)C)OC(C)(C)C to produce CC(C)(C)OC(=O)c1ccc(F)c(Cl)c1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.