COc1cccc(C(C(=O)NC(C)(C)C)N(C(=O)CCC(=O)Nc2cc(C)on2)C(C)C)c1OC
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?