Cc1ccc(OCc2ccc(C(=O)Nc3c(C)nn(Cc4c(F)c(F)c(F)c(F)c4F)c3C)o2)c([N+](=O)[O-])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?