COCC(=O)N(C)[C@H]1C[C@H]2c3cc(N4CCN(C)CC4)ccc3CCN2C(=O)[C@H]1[C@H](C)O
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?