Cc1cccc(N2CCN(C(=O)c3cnn(-c4ccccc4Cl)c3C3CCN(C(=O)OC(C)(C)C)CC3)CC2C)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?