2H-pyrrol-2-one, 1,5-dihydro-3-pentyl-1-(1-phenylethyl)- 3-pentyl-1-(1-phenylethyl)-1,5-dihydro-2H-pyrrol-2-one InChI=1/C17H23NO/c1-3-4-6-11-16-12-13-18(17(16)19)14(2)15-9-7-5-8-10-15/h5,7-10,12,14H,3-4,6,11,13H2,1-2H