Using CCn1nc(C)cc1C1CCN(CCC(=O)c2ccc(Cl)cc2)CC1 to produce CCn1nc(C)cc1C1CCN(CCC(O)c2ccc(Cl)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.