(1R,2S,4R)-1,5-dimethoxy-3-methylenebicyclo[2.2.0]hex-5-en-2-yl rel-acetate InChI=1/C11H14O4/c1-6-9-8(13-3)5-11(9,14-4)10(6)15-7(2)12/h5,9-10H,1H2,2-4H3/t9-,10+,11-/m1/s bicyclo[2.2.0]hex-5-en-2-ol, 1,5-dimethoxy-3-methylene-, acetate, (1R,2S,4R)-