CC(=O)Oc1ccc(N2C(=O)[C@@H]3[C@H]4c5ccccc5C=NN4[C@H](C(C)=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?