CC(=O)c1ccc(N(C(=O)Cn2nnc3ccccc32)C(C(=O)NC2CCCCC2)c2cn(C)nc2C)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?