CC(=O)C1C(=O)C(=O)N(c2ccccc2N2C(=O)C(=O)C(C(C)=O)C2=O)C1=O
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?