CCOc1ccc(NC(=O)C2=C(C)NC(C)=C(C(=O)Nc3ccc(OCC)cc3)C2c2ccccc2)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?