COc1ccc(C(C(=O)NC2CCCC2)N(CCO)C(=O)Cn2nnc(-c3ccc(C)o3)n2)cc1OC
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?