user: Question: What is the current map designation of the feature for which Derain crater was the namesake?
Columns: ['Name', 'Number', 'Namesake', 'Albedo feature name', 'Area', 'Current map']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Borealis', 'H-1', 'Borealis Planitia', 'Borea', 'North pole to 67° latitude', 'H-1']
SQL:

assistant: SELECT "Current map" FROM "Table" WHERE "Namesake" = 'Derain crater';