O=C(Nc1ncc(Cc2ccc(C(F)(F)F)cc2)s1)c1ccc(-c2cccc([N+](=O)[O-])c2)o1
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?