The molecule is a L-histidine derivative that is ergothioneine in which the thiol hydrogen has been replaced by a hydroxy group. It is a SO-thioperoxol, an amino-acid betaine and a L-histidine derivative. It derives from an ergothioneine.
(2S)-3-(2-hydroxysulfanyl-1H-imidazol-5-yl)-2-(trimethylazaniumyl)propanoate