O=C(O)C12C[C@@H]3C[C@H](C1)CC(n1ncc(N4CCN(c5ccccc5)CC4)c(Cl)c1=O)(C3)C2
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?