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