(2S)-naringenin => 2',4,4',6'-tetrahydroxychalcone
(2s)-naringenin => 2',4,4',6'-tetrahydroxychalcone
(2S)-naringenin => 2',4,4',6'-tetrahydroxychalcone
(2s)-naringenin => 2',4,4',6'-tetrahydroxychalcone