COC(=O)c1c(N2C(=O)[C@@H]3[C@@H]4CCCN4[C@@]4(C(=O)Nc5c4ccc(C)c5C)[C@@H]3C2=O)sc(C)c1C
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?