C[C@H]1CN([C@H](C)CO)C(=O)c2cccc(NC(=O)C3CC3)c2O[C@@H]1CN(C)CC1CCCCC1
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?