COC(=O)c1ccc2c(=O)n(CCCCCC(=O)N3CCN(c4ccc(Cl)cc4)CC3)c(=O)[nH]c2c1
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?