Cc1cccc(-n2ncc(C(=O)N3CCc4ccccc4C3)c2C2CCN(C(=O)OC(C)(C)C)CC2)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?