CCCSc1nc(O)c(C(c2ccc(OC)c(O)c2)c2c(O)nc(SCCC)n(C)c2=O)c(=O)n1C
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?