C/C=C(/C)C(=O)Nc1cccc(C2=NOC3(C2)C[C@H](C(N)=O)N(C(=O)COc2ccc(Cl)cc2)C3)c1
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?