CC1=C(C(=O)Nc2ccccc2)C(c2cc(Br)ccc2F)n2ncc(C(=O)Nc3ccccc3)c2N1
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?