CC[C@@H](C)C(NC(=O)OC(C)(C)C)c1cn([C@@H](Cc2ccc(O)cc2)C(=O)N2CCN(C(=O)OC(C)(C)C)CC2)nn1
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?