COCCN(C(=O)CSc1nnc(-c2ccc(C(C)(C)C)cc2)n1N)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
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?