What is the pick number for the team toronto fc and affiliation is ldu quito?
CREATE TABLE "table1_29626583_3" (
  "pick_num" real,
  "mls_team" text,
  "player" text,
  "position" text,
  "affiliation" text
);
SELECT MAX("pick_num") FROM "table1_29626583_3" WHERE "mls_team"='Toronto FC' AND "affiliation"='LDU Quito';