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