CCOC(=O)c1[nH]c(C)c(CN(CCc2ccc(OC)c(OC)c2)C(=O)CCCC(=O)O)c1C
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?