preferred_name: precorrin-5 + S-adenosyl-L-homocysteine => precorrin-4 + S-adenosyl-L-methionine
preferred_name_lc: precorrin-5 + s-adenosyl-l-homocysteine => precorrin-4 + s-adenosyl-l-methionine
label: precorrin-5 + S-adenosyl-L-homocysteine => precorrin-4 + S-adenosyl-L-methionine
label_lc: precorrin-5 + s-adenosyl-l-homocysteine => precorrin-4 + s-adenosyl-l-methionine