O=C(NC(c1ccc(-c2ccccc2)cc1)c1cnccn1)C1CCN(CCN2C(=O)c3ccccc3C2=O)CC1
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?