COc1ccc(C2CC(=O)Oc3c(C(CCN4CCCC(C)C4)c4ccc(N(C)C)cc4)c(OC)cc(OC)c32)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?