O=C(c1ccccc1)[C@@H]1[C@@H](C(=O)c2ccc(F)cc2)[C@@]2(C(=O)Nc3ccccc32)[C@H]2c3ccccc3C=CN12
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?