preferred_name: succinate + FAD <=> fumarate + FADH2 (Gallus gallus)
preferred_name_lc: succinate + fad <=> fumarate + fadh2 (gallus gallus)
label: succinate + FAD <=> fumarate + FADH2 (Gallus gallus)
label_lc: succinate + fad <=> fumarate + fadh2 (gallus gallus)