1-(4,5,6,7-tetrahydro-4-methyl-5-oxoisobenzofuranyl)-3-pentanone

5a-methyl-3,4,6,7-tetrahydrospiro[naphtho[1,8-bc]furan-5,2'-[1,3]dithian]-8(5aH)-one

3-(4-methyl-6,7-dihydro-4H-spiro[isobenzofuran-5,2'-[1,3]dithian]-4-yl)propanoic acid