CCOc1ccc2nc(NC(=O)C(=O)C(C(=O)c3ccccc3-c3ccccc3)C3OC(=O)c4ccccc43)sc2c1
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?