CCOC(=O)c1c(C)sc(-c2c(-c3ccc(OC)c(F)c3)[nH]c3[nH]c(=O)[nH]c(=O)c23)c1O
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?