Name Space error VS2015

Hi,

I' am trying use the following code to validate a sql query:

       Dim sql As String
        Dim script As Microsoft.SqlServer.SqlParser.SqlCodeDom.SqlScript
        sql = " SELECT * FROM FROM sys.objects"
        'a shared public function, no need to construct an object, so no object.parse method is used.
        script = Microsoft.SqlServer.SqlParser.Parser.Parser.Parse(sql)
        For Each s As Microsoft.SqlServer.SqlParser.Parser.Error In script.Errors
            Debug.Print(s.Message)
        Next

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I use Vs 2015, but not recognizes Microsoft.SqlServer.SqlParser.SqlCodeDom.SqlScript name space.

best regards