Using COc1cc(N2CCCC(N3CCN(C(=O)OCc4ccccc4)CC3)C2)ccc1[N+](=O)[O-] to produce COc1cc(N2CCCC(N3CCNCC3)C2)ccc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.