What is the estimated end date for the 2001-037a international designated satellite?
CREATE TABLE "table1_18161217_2" (
  "satellite" text,
  "cospar_id" text,
  "satcat_no" real,
  "product_number" real,
  "launch_date" text,
  "estimated_end_date_clarification_needed" text,
  "estimated_operational_life" text
);
SELECT "estimated_end_date_clarification_needed" FROM "table1_18161217_2" WHERE "cospar_id"='2001-037A';