1H-tetrazolium, 1,4-dimethyl-5-(2-propenyl)- 5-allyl-1,4-dimethyl-1H-tetrazol-4-ium InChI=1/C6H11N4/c1-4-5-6-9(2)7-8-10(6)3/h4H,1,5H2,2-3H3/q+