O=C(C[n+]1ccccc1)N/N=C(\Cc1nc2ccc([N+](=O)[O-])cc2nc1O)C(=O)Nc1cc(Cl)c(Cl)cc1Cl.[Cl-]
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?