Cc1ccc[n+](C2C(c3ccc([N+](=O)[O-])cc3)C(C#N)=C([S-])NC2(O)C2CC2)c1
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?