ethyl 6,7-epoxy-3α-ethenyl-1,2,3,6,7,11bα-hexahydro-10-methoxy-5H-3,5aα-methanonaphth<2,1-c>oxepin-12-endo-ylacetate

rac-(3R,3aS,6aR,11bS)-10-methoxy-3-vinyl-1,2,3,3a,4,6a,7,11b-octahydro-5H-3,3a1-(epoxymethano)dibenzo[de,g]chromen-5-one

3α-ethenyl-1,2,3,6,7,11bα-hexahydro-6β-hydroxy-10-methoxy-5H-3,5aα-methanonaphth<2,1-c>oxepin-12-endo-ylacetic acid

ethyl 3α-ethenyl-1,2,3,6,7,11bα-hexahydro-6β-hydroxy-10-methoxy-5H-3,5aα-methanonaphth<2,1-c>oxepin-12-endo-ylacetate