O=C(Nc1c(Cl)cc([N+](=O)[O-])cc1Cl)C(=O)C(C(=O)c1ccncc1)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?