CC(=O)O.CN1CCN(CN2C(=O)C3C4C=CC(C3C2=O)C2C3C(=O)N(CN5CCN(C)CC5)C(=O)C3C42)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?