1,1'-butane-2,3-diyldibenzene 4613-11-0 InChI=1/C16H18/c1-13(15-9-5-3-6-10-15)14(2)16-11-7-4-8-12-16/h3-14H,1-2H benzene, 1,1'-(1,2-dimethyl-1,2-ethanediyl)bis-