COc1ccc(N2C=C3C(=O)C(C)(OC(=O)C4CCCC4)C(=O)C=C3C=C2c2ccsc2)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?