Integrated spectrum extracted from the central three by three spaxels in the wavelength range 2.86 μm < λ < 4.85 μm with flux in linear scale (top) and log scale (bottom). Several emission lines are present and indicated by vertical lines at the top of the panels. We detected seven He I lines, He IIλ4686, Hβ, [O III]λλ4959, 5007, Hα, [N II]λλ6548, 6583, and [S II]λλ6716, 6731. We also report the detection of [Ar IV]λ4711, [Ar IV]λ4740, and [Ar III]λ7136. (We note that [Ar IV]λ4711 is blended with He Iλ4713.) The auroral line [O III]λ4363 is only partly covered by the spectral band of our observation with the G395H grating. The line [O I]λ6003 falls into the detector gap masked here in the region 4.06 μm < λ < 4.14 μm. The BLR components are present in Hβ, Hα, He II, and in the He I lines. In addition, an outflow component is present and is best visible in the broadened asymmetric line base of the [O III] doublet. In the bottom panel, we indicate with grey dotted vertical lines the positions of possible coronal lines, [Fe XVI], [Ca V], [Fe XIII], [Fe V]; of an auroral line, [N II]λ5755; and of another line at λ ∼ 7167.5 Å, the position of which is consistent with Si I.