CCN(CC)C(=O)[C@H]1C[C@H](CC(=O)NCC23C[C@H]4C[C@@H](C2)C[C@@H](C3)C4)C(=O)N2CCc3c([nH]c4cc(CCC(=O)N(C)C)ccc34)[C@]12C
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?