C. Cicone, M. Bothwell, J. Wagg, P. Møller, C. De Breuck, Z. Zhang, S. Martín, R. Maiolino, P. Severgnini, M. Aravena and 9 other author(s). (2017)cite arxiv:1705.05851Comment: Accepted for publication in A&A. Abstract abridged due to arXiv requirements. The APEX spectra are available via the dedicated Phase 3 query interface at the ESO Science Archive Facility: http://archive.eso.org/wdb/wdb/adp/phase3_spectral/form?collection_name=ALLSMOG.