CC(C)(C)OC(=O)NC(Cc1ccc(OC(C)(C)C)cc1)C(=O)N[C@H]1CC[C@H](C(=O)O)C1
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?