Name the most share for 2.76 million viewers 
CREATE TABLE "ratings_chart" (
  "order" real,
  "episode" text,
  "airdate" text,
  "rating" text,
  "share" real,
  "rating_share_18_49" text,
  "viewers_millions" text,
  "rank_night" real
);
SELECT MAX("share") FROM "ratings_chart" WHERE "viewers_millions"='2.76';