Using O=C(COc1cc(-c2ccc([N+](=O)[O-])cc2)nc2ccccc12)N1CCOCC1 to produce Nc1ccc(-c2cc(OCC(=O)N3CCOCC3)c3ccccc3n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.