CCO[C@H]1OC(C(=O)NCc2nc3ccccc3[nH]2)=C[C@@H](c2cn(C(C)=O)c3ccccc23)[C@@H]1CCCO
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?