(methyl)-triphenylarsonium iodide InChI=1/C19H18As.HI/c1-20(17-11-5-2-6-12-17,18-13-7-3-8-14-18)19-15-9-4-10-16-19;/h2-16H,1H3;1H/q+1;/p- arsonium, methyltriphenyl-, iodide methyl(triphenyl)arsonium iodide