O=C(Nc1ccc(Nc2ccncc2)cc1)c1ccc(Nc2ccnc3ccc([N+](=O)[O-])cc23)cc1[N+](=O)[O-]
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?