Upper panel, left to right: HST/ACS continuum, continuum subtracted [OIII], and [OIII] (blue)+continuum (red) images of the galaxy. North is up, east is left. The dashed-line boxes indicated the zoomed region in the lower panel. Lower panel: zoom into the central 15×15 arcsec region (11.6×11.6 kpc) for the continuum (upper-left) and the continuum-subtracted [OIII] (upper-middle) images of the galaxy. The color bars at the bottom of the images indicate the flux in units of erg s^-1 cm^-2 Å^-1 and erg s^-1 cm^-2 for the continuum and the [OIII] images respectively. The white circles indicate the locations of the N and SW nuclear components observed at IR wavelengths, while the blue circle corresponds to the location of the SE component that emerges at radio wavelengths. The green-dashed line ellipses in the continuum subtracted [OIII] image indicate the location of the nuclear superbubble reported by RV13 in their IFS study of the source, while magenta-dashed line circles indicate the location of the so-called Outflow-East and West regions (see text for details). (A color version of this figure is available in the online journal.)