preferred_name: an aldehyde + glycerol => a 1-(1-hydroxyalkyl)-sn-glycerol
preferred_name_lc: an aldehyde + glycerol => a 1-(1-hydroxyalkyl)-sn-glycerol
label: an aldehyde + glycerol => a 1-(1-hydroxyalkyl)-sn-glycerol
label_lc: an aldehyde + glycerol => a 1-(1-hydroxyalkyl)-sn-glycerol