Using COC(=O)c1ccc2c(c1)-c1sc(C(=O)N(C)c3ccc(Cl)cc3Cl)cc1CCO2 to produce O=C(O)c1ccc2c(c1)-c1sccc1CCO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.