1-ethynyl-4-[(4-methoxyphenyl)ethynyl]benzene 4-([4-ethynylphenyl)ethynyl]phenyl methyl ether InChI=1/C17H12O/c1-3-14-4-6-15(7-5-14)8-9-16-10-12-17(18-2)13-11-16/h1,4-7,10-13H,2H benzene, 1-ethynyl-4-[(4-methoxyphenyl)ethynyl]-