O=C(c1ccc2c(=O)n(CCc3ccccc3)c(=O)[nH]c2c1)N1CCN(c2ccc(F)cc2)CC1
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?