Nope. "Most sanctioned" as a metric is nebulous as hell. Absolute count of sanctions passed seems meaningless. A better metric is a crippling effect it as on the subject. DPRK and even Cuba are way "more sanctioned" in that regard. Russia has the benefit of a pre-existing industrial base and being already deeply embedded in the global trade network. Many sanctions were passed against Russia but they did not have the effect the US wanted. Sanctions on DPRK and Cuba on the other hand are the equivalent of trying to smother a baby in their crib. It's downright demonic.