preferred_name: a 5'-end (5'-methylphospho)-ribonucleoside-RNA + S-adenosyl-L-methionine => a 5'-end (5'-bismethylphospho)-ribonucleoside-RNA + S-adenosyl-L-homocysteine
preferred_name_lc: a 5'-end (5'-methylphospho)-ribonucleoside-rna + s-adenosyl-l-methionine => a 5'-end (5'-bismethylphospho)-ribonucleoside-rna + s-adenosyl-l-homocysteine
label: a 5'-end (5'-methylphospho)-ribonucleoside-RNA + S-adenosyl-L-methionine => a 5'-end (5'-bismethylphospho)-ribonucleoside-RNA + S-adenosyl-L-homocysteine
label_lc: a 5'-end (5'-methylphospho)-ribonucleoside-rna + s-adenosyl-l-methionine => a 5'-end (5'-bismethylphospho)-ribonucleoside-rna + s-adenosyl-l-homocysteine