preferred_name: arginine + H2O => ornithine + urea (Gallus gallus)
preferred_name_lc: arginine + h2o => ornithine + urea (gallus gallus)
label: arginine + H2O => ornithine + urea (Gallus gallus)
label_lc: arginine + h2o => ornithine + urea (gallus gallus)