CN[C@H]1C[C@H]2c3[nH]c4ccc(-c5ccc(OC)cc5)cc4c3CCN2C(=O)[C@H]1[C@H](C)O
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?