CC1(C)OC[C@@H]([C@H]2O[C@H](On3nnc4ccc(Cl)cc43)[C@@H]3OC(C)(C)O[C@H]23)O1
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?