preferred_name: a 3'-end 2',3'-cyclophospho-uridine-RNA + adenosine => a 3'-end uridylyl-adenosine-RNA
preferred_name_lc: a 3'-end 2',3'-cyclophospho-uridine-rna + adenosine => a 3'-end uridylyl-adenosine-rna
label: a 3'-end 2',3'-cyclophospho-uridine-RNA + adenosine => a 3'-end uridylyl-adenosine-RNA
label_lc: a 3'-end 2',3'-cyclophospho-uridine-rna + adenosine => a 3'-end uridylyl-adenosine-rna