methyl (1R,5S,6R,7R)-6-<3-cyclopentyl-3(S)-hydroxy-(E)-1-propenyl>-7-hydroxybicyclo<3.3.0>oct-2-ene-3-pentanoate

methyl (1R,5S,6R,7R)-7-hydroxy-6-<3(R)-hydroxy-4,4-dimethyl-(E)-1-octenyl>bicyclo<3.3.0>oct-2-ene-3-pentanoate