preferred_name: 2-methylene-3-methylsuccinate => 2-methyleneglutarate
preferred_name_lc: 2-methylene-3-methylsuccinate => 2-methyleneglutarate
label: 2-methylene-3-methylsuccinate => 2-methyleneglutarate
label_lc: 2-methylene-3-methylsuccinate => 2-methyleneglutarate