label: 2',4,4',6'-tetrahydroxychalcone + UDP-alpha-D-glucose <=> 2',4,4',6'-tetrahydroxychalcone 4'-O-beta-D-glucoside + UDP + H(+)
label_lc: 2',4,4',6'-tetrahydroxychalcone + udp-alpha-d-glucose <=> 2',4,4',6'-tetrahydroxychalcone 4'-o-beta-d-glucoside + udp + h(+)