2-(3,5,5-trimethyl-2-cyclohexen-1-ylidene)propanedinitrile;2-(3,5,5-trimethylcyclohex-2-enylidene)malononitrile;2-(3,5,5-trimethylcyclohex-2-en-1-ylidene)malononitrile;C-1668;3-Dicyanomethylene-1,5,5-trimethylcyclohexene;(3,5,5-Trimethyl-2-cyclohexen-1-yl