CC(C)[C@@H](CC(=O)N[C@@H]1CCCC[C@H]1C(=O)N[C@H](CC(=O)N[C@@H](CCC(=O)O)CC(=O)O)Cc1ccccc1)NC(=O)C[C@H](Cc1ccccc1)NC(=O)[C@@H]1CCCC[C@H]1N
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?