O=C(O)CO[C@@]12C#C/C=C\C#C[C@@H]3N(C(=O)Oc4ccccc4)c4ccccc4[C@]14O[C@@]34CCC2
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?