O=C(NC(=O)c1ccccc1[N+](=O)[O-])Nc1ccc(Oc2ncc(Cl)cn2)c([N+](=O)[O-])c1
The donor in a hydrogen bond is usually a strongly electronegative atom such as N, O, or F that is covalently bonded to a hydrogen bond. How many hydrogen bond donors does the molecule have?