CCOC(=O)N1CCC(N2CC34C=CC(O3)C(C(=O)Nc3ccc(C(C)C)cc3)C4C2=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?