1'-(4-(Propylamino)butyl)-3,4-dihydrospiro(naphthalene-1(2H),3'-pyrrolidine)-2',5'-dione 74246-95-0 BRN 1549050 Spiro(naphthalene-1(2H),3'-pyrrolidine)-2',5'-dione, 3,4-dihydro-1'-(4-(propylamino)butyl)-, (+-)-