N#Cc1c(C#N)c(SSc2c(C#N)c(C#N)c(N)n2-c2cccc3ccccc23)n(-c2cccc3ccccc23)c1N
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?