CCCCCCN1C[C@H](O)[C@@H](n2cc(COC(=O)c3ccccc3)nn2)C[C@@H]1c1ccc(C)cc1
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?