Natural weighted integrated intensity maps of all detected species in this work. Beam size of 4.1″ × 2.9″ is shown in the lower left corner of each box. Emission was integrated over the velocity range between −140 and +140 km s^-1 for SiO, C₃H₂, and HC₃N, while we used the velocity ranges of [−190, +470] for CN, [−80, +140] for H₂CO, and [−190, +350] for ¹³CN (see Sect. 3 for details). Background image corresponds to the integrated emission of CN. Contour levels are at 2σ (with σ = 2.3   Jy   beam^-1 km   s^-1) steps for all maps but for CN, where the first contour is 3σ and increases in 8σ steps.