Cc1nn(-c2ccc([N+](=O)[O-])cc2)c2c1C(c1ccc(OC(F)F)cc1)N1C(=N2)C(=O)Nc2ccccc21
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?