C[C@@H]1CN([C@H](C)CO)S(=O)(=O)c2ccc(-c3ccc(C#N)cc3)cc2O[C@H]1CN(C)C(=O)Nc1cc(F)ccc1F
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?