O=C(Nc1ccccc1[N+](=O)[O-])C(=O)C(C(=O)c1ccccc1-c1ccccc1)C1OC(=O)c2ccccc21
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?