(5-indanyl) (1-propenyl) ether (5-indanyl) (prop-1-enyl) ether 1H-indene, 2,3-dihydro-5-[(1Z)-1-propenyloxy]- 2,3-dihydro-1H-inden-5-yl (1Z)-prop-1-en-1-yl ether InChI=1/C12H14O/c1-2-8-13-12-7-6-10-4-3-5-11(10)9-12/h2,6-9H,3-5H2,1H3/b8-2