COc1cc(S(=O)(=O)Nc2ccc(C)cc2)ccc1N/C=C1\C(=O)N(C)C(=O)C(C#N)=C1C
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?