What is the average points that Centro Asegurador earned with the McLaren M23 chassis?
CREATE TABLE "complete_formula_one_world_championship_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "points" real
);
SELECT AVG("points") FROM "complete_formula_one_world_championship_" WHERE "chassis"='mclaren m23' AND "entrant"='centro asegurador';