N#Cc1ccc(CSC2=C(c3ccc(Cl)cc3)S/C(=C3\SC(SCc4ccc(C#N)cc4)=C(c4ccc(Cl)cc4)S3)S2)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?