COc1ccc(-n2c(=O)c3c(C)c(C)sc3n(CC(=O)NCc3ccc(C)cc3)c2=O)c(OC)c1
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?