3-methyl-6-methylidenecyclohex-2-en-1-one;3-methyl-6-methylene-cyclohex-2-en-1-one;3-methyl-6-methylene-1-cyclohex-2-enone;3-methyl-6-methylidene-cyclohex-2-en-1-one
3-methyl-6-methylidenecyclohex-2-en-1-one