CC1(C)C(=O)C(c2ccccc2)=C2CN3C(=O)N(CCc4ccccc4)C(=O)C3(Cc3ccccc3)C=C21
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?