N#Cc1c(N2C(=O)[C@H]3[C@H]4C[C@@H]([C@H]3C2=O)[C@@H]2C(c3ccc(Cl)cc3)=NO[C@H]42)sc2c1CCCC2
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?