Lines of typical outflow tracers detected toward Sgr B2(N4). The red spectrum represents our LTE model fit to the complete observed spectrum of the molecule. The green spectrum shows the model that contains all the molecules identified so far toward Sgr B2(N4). The dashed horizontal line shows the 3σ level. The systemic velocity of the source is marked with the dashed vertical line. The rest frequency and upper level energy (in temperature units) of each transition are indicated in each panel.