2H-isoindole-2-pentanoic acid, 1,3-dihydro-gamma-hydroxy-alpha-methylene-delta-(1-methylethyl)-1,3-dioxo-, methyl ester, (gammaS,deltaR)- InChI=1/C18H21NO5/c1-10(2)15(14(20)9-11(3)18(23)24-4)19-16(21)12-7-5-6-8-13(12)17(19)22/h5-8,10,14-15,20H,3,9H2,1-2,4H3/t14-,15+/m0/s methyl (4S,5R)-5-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-4-hydroxy-6-methyl-2-methyleneheptanoate