CCOC(=O)N1CCc2c(sc(NCc3ccc(N(CC)CC)cc3)c2C(=O)Nc2cc(OC)ccc2OC)C1
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?