Contours of the line integrals of the observed molecular transitions(only component C3) overlayed on a VVV, Hα and WISEfalse colour image. The respective beam sizes for each molecule are shown in the lower left of each panel. a) (1−0) (in white) and (2−1) (in red) contours.Lowest contour level and increment in scale is 2 K km s^-1. b) As a but for .Lowest contour level and increment are 1 K km s^-1 for (1−0) and 0.5 K km s^-1 for (2−1). c) As a for C¹⁸O.Lowest contour level and increment 0.2 K km s^-1, and d) as a for CS (2−1) (in white) and CS (3–2) in red.Lowest contours and increments are 0.2 K km s^-1 for CS (2−1) and 0.1 K km s^-1 for CS (3–2).