C=C1C[C@]23C[C@H]4[C@H]5[C@@]67[C@H](OC(C)=O)[C@@H](OC(=O)c8ccccc8)C[C@@]5(C)CN4[C@@H]6[C@@H]2[C@H](O)[C@@H]1[C@H](OC(C)=O)[C@@H]73
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?