4,4-dimethyl-2-methylidenepentanoic acid;4,4-dimethyl-2-methylene-pentanoic acid;4,4-dimethyl-2-methylenepentanoic acid;2-neopentylacrylic acid;4,4-dimethyl-2-methylidene-pentanoic acid
4,4-dimethyl-2-methylidenepentanoic acid