C[C@H](OC(=O)N1CCN(C(c2ccccc2)c2ccccc2)CC1)[C@@H]1O[C@@]2(C)CCC[C@H]1O2
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?