CC(=O)C1=C(c2ccccc2)N(C2OC(CO)C(O)C(O)C2O)C(S)=C(C#N)C1c1ccc(Cl)cc1
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?