Methyl cis-communate

(12Z)-Labda-8(17),12,14-triene-19-oic acid methyl ester

(1S)-1,2,3,4,4a,5,6,7,8,8aα-Decahydro-1,4aβ-dimethyl-6-methylene-5β-[(2Z)-3-methyl-2,4-pentadienyl]-1β-naphthalenecarboxylic acid methyl ester