Number 48 (Story #2), September 19, 1991 by Phillip F. Schewe and Ben Stein C-76 HAS BEEN ISOLATED by scientists at UCLA. Unlike C-60, which is spherically symmetric, C-76 has a complicated double-helical cagework of carbon pentagons and hexagons. The molecule's chiral structure, the UCLA researchers believe, may result in interesting optical properties. (Nature, 12 September 1991.)