preferred_name: precorrin-2 + S-adenosyl-L-homocysteine => precorrin-1 + S-adenosyl-L-methionine
preferred_name_lc: precorrin-2 + s-adenosyl-l-homocysteine => precorrin-1 + s-adenosyl-l-methionine
label: precorrin-2 + S-adenosyl-L-homocysteine => precorrin-1 + S-adenosyl-L-methionine
label_lc: precorrin-2 + s-adenosyl-l-homocysteine => precorrin-1 + s-adenosyl-l-methionine