1,7,7-trimethylbicyclo[2.2.1]hept-2-yl acrylate 2-propenoic acid, 1,7,7-trimethylbicyclo[2.2.1]hept-2-yl ester InChI=1/C13H20O2/c1-5-11(14)15-10-8-9-6-7-13(10,4)12(9,2)3/h5,9-10H,1,6-8H2,2-4H