COc1ccc(C(=O)COC(=O)[C@H](C)Nc2ccc(C(F)(F)F)cc2[N+](=O)[O-])c(OC)c1
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?