COc1ccc(CCNC(=O)CSc2cn(CCNC(=O)c3ccc(OC)c(OC)c3)c3ccccc23)cc1OC
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?