C[C@@H](CO)N1C[C@@H](C)[C@H](CN(C)Cc2ccc(-c3ccccc3)cc2)OCc2cnnn2CCCC1=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?