C=CCN(c1cc(O)c2c(c(C)cn2S(=O)(=O)c2ccccc2)c1[N+](=O)[O-])S(C)(=O)=O
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?