O=C(N/C(=C/c1ccc(Cl)cc1)c1nc2ccccc2c(=O)n1Nc1ccc([N+](=O)[O-])cc1[N+](=O)[O-])c1ccccc1
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?