I can't tell exactly what it is, but I'm pretty sure it's one of the methyl-spacer indole/indazole cannabinoid analogues or hydrazide-linked ones. After Chinese blanket ban for common cannabinoid structures, almost all imported cannabinoids we analyzed were methyl bridged cannabinoids. Almost similar to classic indole/indazole cannabinoids, high CB1 affinity and easy to manufacture. For example - ADB-FUBIATA, aka AD-18