Using CC(=O)OCc1cc(C(Cl)(Cl)Cl)n(-c2ncccc2Cl)n1 to produce OCc1cc(C(Cl)(Cl)Cl)n(-c2ncccc2Cl)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.