preferred_name: lactose + UDP + H(+) => D-glucose + UDP-alpha-D-galactose
preferred_name_lc: lactose + udp + h(+) => d-glucose + udp-alpha-d-galactose
label: lactose + UDP + H(+) => D-glucose + UDP-alpha-D-galactose
label_lc: lactose + udp + h(+) => d-glucose + udp-alpha-d-galactose