O=C(Cc1ccc(NC(=O)C2CCN(C(=O)CCc3ccccc3)CC2)cc1)Nc1ccc(C(=O)N2CCOCC2)cc1
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?