Using Cn1ccc(Nc2ncnc3ccc(Oc4ncc(OCC=O)cc4Cl)cc23)n1 to produce Cn1ccc(Nc2ncnc3ccc(Oc4ncc(OCCO)cc4Cl)cc23)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.