preferred_name: 2',4,4',6'-tetrahydroxychalcone <=> (2S)-naringenin
preferred_name_lc: 2',4,4',6'-tetrahydroxychalcone <=> (2s)-naringenin
label: 2',4,4',6'-tetrahydroxychalcone <=> (2S)-naringenin
label_lc: 2',4,4',6'-tetrahydroxychalcone <=> (2s)-naringenin