C[n+]1c(-c2ccccc2)cc2/c(=C\c3ccc([N+](=O)[O-])cc3)c3ccccc3n21.O=S(=O)([O-])C(F)(F)F
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?