| 英文同义词: | SPIRO[CHROMANE-4,4-IMIDAZOLIDINE]-2,5-DIONE;Spiro[chroman-4,4'-imidazolidine]-2',5'-dione;Spiro[4H-1-benzopyran-4,4'-imidazolidine]-2',5'-dione, 2,3-dihydro-;2,3-dihydrospiro[1-benzopyran-4,4'-imidazolidine]-2',5'-dione;2,3-Dihydrospiro[4H-1-benzopyran-4,4'-imidazolidine]-2',5'-dione;spiro[chromane-4,4'-imidazolidine]-2',5'-dione;2,3-Dihydro-2'H,5'H-spiro[chromene-4,4'-imidazolidine]-2',5'-dione |