preferred_name: a cis-3-alkyl-4-alkyloxetan-2-one = a cis-alkene + CO2
preferred_name_lc: a cis-3-alkyl-4-alkyloxetan-2-one = a cis-alkene + co2
label: a cis-3-alkyl-4-alkyloxetan-2-one = a cis-alkene + CO2
label_lc: a cis-3-alkyl-4-alkyloxetan-2-one = a cis-alkene + co2