InChI=1/C18H16Si/c1-5-19(6-2,17-11-7-15(3)8-12-17)18-13-9-16(4)10-14-18/h1-2,7-14H,3-4H diethynyl[bis(4-methylphenyl)]silane silane, diethynylbis(4-methylphenyl)-