The molecule is a cysteine derivative obtained by formal condensation between N-butyl-L-cysteinamide and (R)-2-hydroxy-2-phenylacetic acid. It is a secondary alcohol, a monocarboxylic acid amide and a L-cysteine derivative.
(2R)-N-butyl-2-[[(2R)-2-hydroxy-2-phenylacetyl]amino]-3-sulfanylpropanamide