CC(=O)Oc1cc(C(F)(F)F)ccc1C(=O)OC1(C)OC(=O)c2ccc(C(F)(F)F)cc2O1
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?