O=C(OCc1cn([C@H]2CN(CC3CCCCC3)[C@@H](c3ccc(Cl)cc3)C[C@@H]2O)nn1)c1ccccc1
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?