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However, no spectroscopic redshift for this burst is known.\n  Methods: We compiled ground-based photometric optical/NIR and millimeter data from several observatories, including the multi-channel imager GROND, as well as ultraviolet \\swift UVOT and X-ray XRT observations. The spectral energy distribution of the optical/NIR afterglow shows a sharp drop in the \\swift UVOT UV filters that can be utilized for the estimation of a redshift.\n  Results: Fitting the SED from the ","authors_text":"A. C. Updike, A. de Ugarte Postigo, A. Garc\\'ia-Hern\\'andez, A. Giuliani, A. J. Castro-Tirado, A. K\\\"upc\\\"u Yolda\\c{s}, A. Rossi, A. Yolda\\c{s}, C. Clemens, D. A. Kann, D. A. Perley, D. H. Hartmann, E. E. Gonsalves, G. Szokoly, J. Gorosabel, J. Greiner, J. P. U. Fynbo, J. S. Bloom, L. Hanlon, M. Bremer, P. Ferrero, P. Kub\\'anek, P. M. J. Afonso, P. Schady, R. Filgas, S. Klose, S. Schulze, S. T. Holland, T. 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