Cc1ccc(-n2ncc(C(=O)NCCCN3CCN(C)CC3)c2C2CCN(C(=O)OC(C)(C)C)CC2)c(C)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?