String theory on AdS3βΓS3ΓS3ΓS1 with pure NS-NS flux and minimal flux through one of the two S3's is studied from a world-sheet perspective. It is shown that the
spacetime spectrum, as well as the algebra of spectrum generating operators,
matches precisely that of the symmetric orbifold of S3ΓS1 in the large N limit. This gives strong support for the
proposal that these two descriptions are exactly dual to one another.Comment: 25+23 page