preferred_name: an N(7)-methylguanosine in miRNA + S-adenosyl-L-homocysteine => a guanosine in miRNA + S-adenosyl-L-methionine
preferred_name_lc: an n(7)-methylguanosine in mirna + s-adenosyl-l-homocysteine => a guanosine in mirna + s-adenosyl-l-methionine
label: an N(7)-methylguanosine in miRNA + S-adenosyl-L-homocysteine => a guanosine in miRNA + S-adenosyl-L-methionine
label_lc: an n(7)-methylguanosine in mirna + s-adenosyl-l-homocysteine => a guanosine in mirna + s-adenosyl-l-methionine