Cc1ccc(N2C(=O)c3ccc(C(=O)N4CCN(c5ccc(C)c(C)c5)CC4)cc3C2=O)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?