Winner Barry Trost, Tamaki Professor of Humanities and Sciences, Stanford University, and other organic chemists from around the globe, will speak Dec. 5 from 1 to 5 p.m. in The LaSells Stewart Center.  Free reception and poster session following, 5-6 p.m.  Banquet dinner at 6 p.m. ($30 full, $15 student). Visit oregon.site.acs.org for banquet and poster registration.