C[C@H](O)[C@@H]1CN2CCc3c([nH]c4ccccc34)[C@@H]2C[C@@H]1N(C)C(=O)c1ccco1
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?