WIN 55,212-2
WIN 55 , 212-2 is a full agonist at the CB1 cannabinoid receptor ( "K"i = 1 . 9 nM ) and has much higher affinity than THC ( "K"i = 41 nM ) for this receptor . 
<triplet> WIN 55,212-2 <subj> CB1 cannabinoid receptor <obj> physically interacts with <triplet> CB1 cannabinoid receptor <subj> WIN 55,212-2 <obj> physically interacts with <subj> THC <obj> physically interacts with