O=[N+]([O-])C(/C=C(\Cl)[N+](=O)[O-])=C1N(Cc2ccc(Cl)nc2)CCN1Cc1ccc(Cl)nc1
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?