COc1ccc(CCNC(=O)CCCn2c(=O)c3ccccc3n(CC(=O)Nc3c(C)cc(C)cc3C)c2=O)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?