What active ingredient is in K2 herb/ (Legal bud) / (Synthetic marijuana)?

The synthetic marijuana is actually not synthetic THC. THe active ingredients in k2 are actually synthetic cannabonoids that are also found in marijuana in smaller traces then THC but still cause psychoactive effects on the brain. The cannabonoids listed on the back (the JWH chemicles) have been recently ban by the DEA but the smokable incense companies are just adjusting the chemical compounds of the synthetic cannabonoids to mimic one of the thousands that are not banned and still cause psychological effects. creating an elusive cat and mouse game between the DEA and these incense companies.