Acetic acid (3aS,4S,6aS,7R,9aS,9bR)-2-bromomethyl-4-methyl-2,3,3a,4,6a,7,8,9,9a,9b-decahydro-benzo[de]chromen-7-yl ester

7-methyl-8-(3-oxopropyl)-1,2,3,7,8,8a-hexahydronaphthalen-1-yl 2-methylbutanoate