C=CC[C@@H](CC(=O)OC(C)(C)C)C(=O)OC[C@H]1CCCN1C(=O)[C@@H](CC=C)CC(=O)NCCO
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?