CCN1CCN(C(=O)c2ccc(N3CC4CC(C3)c3cccc(=O)n3C4)c([N+](=O)[O-])c2)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?