COc1cc(/C=C/C(=O)OC(C)C(=O)Nc2c(C)n(C)n(-c3ccccc3)c2=O)ccc1OCC#N
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?