Malformed if Statement

Why won't this work? 

IF [F1]="Network: GLITZ TV ARGEN" OR IF [F1]="Network: GLITZ TV Panregional" OR IF [F1]="Network: SPACE ARGEN" OR IF [F1]="Network: SPACE MEXICO" OR IF [F1]="Network: TNT Argentina" OR IF [F1]="Network: TNT Chile" OR IF [F1]="Network: TNT Mexico" OR IF [F1]="Network: TNT Series" OR IF [F1]="Network: Boomerang Latin America" OR IF [F1]="Network: Cartoon Network Argentina" OR IF [F1]="Network: Cartoon Network Mexico" OR IF [F1]="Network: TBS VERY FUNNY ARGENTINA" OR IF [F1]="Network: TBS VERY FUNNY BRAZIL" OR IF [F1]="Network: TBS VERY FUNNY PANREGIONAL H" OR IF [F1]="Network: TURNER CLASSIC MOVIES" OR IF [F1]="Network: TURNER CLASSIC MOVIES ARGEN" OR IF [F1]="Network: Warner Channel Andes" OR IF [F1]="Network: Warner Channel Mexico"

THEN "YES"

ELSE ""

ENDIF