(+/-)-3-(2c-carboxy-2t-methyl-cyclohex-r-yl)-propionic acid
3-[2t-(2-cyano-propyl)-2c-formyl-cyclohex-r-yl]-propionic acid
(+/-)-2-((Ξ)-furfurylidene)-8a-methyl-(4ar,8at)-octahydro-naphthalen-1-one
(+/-)-2-((Ξ)-furfurylidene)8a-methyl-(4ar,8ac)-octahydro-naphthalen-1-one