CREATE TABLE table_16993 ("Marginal Ordinary Income Tax Rate" TEXT, "Single" TEXT, "Married Filing Jointly or Qualified Widow ( er ) " TEXT, "Married Filing Separately" TEXT, "Head of Household" TEXT)

What is the range for married filing separately in which the head of household is $117,451 $190,200?
SELECT "Married Filing Separately" FROM table_16993 WHERE "Head of Household" = '$117,451–$190,200'
SELECT "Married Filing Separately" FROM "table_16993" WHERE "Head of Household" = '$117,451–$190,200'