Known as: (+)-(S)-N-(4-((5-methoxy-3-chromanyl)propylamino)butyl)-1,1-cyclopentanediacetimide, 4-(N-(5-methoxychroman-3-yl)-N-propylamino)butyl-8-azaspiro(4,5)decane-7,9-dione, 8-(4-(N-(5-methoxychroman-3-yl)-N-propyl)aminobutyl)-8-azaspiro(4,5)decane-7,9-dione