CC(=O)c1ccc(N2C(=O)[C@H]3NN=C(C(=O)CCN4C(=O)c5ccccc5C4=O)[C@H]3C2=O)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?