英文别名
                        1,3-Dioxospiro-4'-carbonsaeure;(R)-1,3-dioxo-spiro[indan-2,2'-thiazolidine]-4'-carboxylic acid;N,S-(1,3-dioxo-indan-2,2-diyl)-L-cysteine;(R)-1,3-Dioxo-spiro[indan-2,2'-thiazolidin]-4'-carbonsaeure;(4R)-1',3'-dioxospiro[1,3-thiazolidine-2,2'-indene]-4-carboxylic acid