CC(=O)OC(/C=C/c1ccccc1)P1(=O)N(CC(C)(C)C)[C@@H]2CCCC[C@H]2N1CC(C)(C)C
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?