O=C1[C@@H]2Cc3c([nH]c4ccccc34)[C@@H](c3ccccc3)N2C(=O)[C@@H]2Cc3c([nH]c4ccccc34)[C@@H](c3ccccc3)N12
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?