C#CCOCCOCCOCCNc1nc(N2CCN(C(=O)Cn3cc(CC(C)O)nn3)CC2)nc(N2CCN(C(=O)Cn3cc(CC(C)O)nn3)CC2)n1
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?