Using C=CCN(C(=O)c1cc(Cl)cc(OCCCON2C(=O)c3ccccc3C2=O)c1)C1CCCC1 to produce C=CCN(C(=O)c1cc(Cl)cc(OCCCON)c1)C1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.