CCC(C)n1c(O)c(C(c2ccccn2)c2c(O)n(C(C)CC)c(=S)[nH]c2=O)c(=O)[nH]c1=S
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?