CC1(C)Cc2c(sc3c2c(=N)n(Cc2ccco2)c(=O)n3CC(=O)Nc2cccc(Cl)c2)CO1
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?