Using CC1(C)C(=O)Nc2nc(OCCCCN3CCN(c4cccc(Cl)c4Cl)CC3)ccc2C1=O to produce CC1(C)C(=O)Nc2nc(OCCCCN3CCN(c4cccc(Cl)c4Cl)CC3)ccc2C1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.