CN(CCNC(=O)c1c[nH]c2c1ccc1ccccc12)CCNC(=O)c1c[nH]c2c1ccc1ccccc12
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?