SDSS composite RGB image with ¹²CO(1–0) overlay. Color image using public SDSS data from the 16th data release (Ahumada et al. 2020). We combined the u, g, and r filter bands. Contours illustrate the IRAM 30 m ¹²CO(1–0) integrated intensities. The mm observations have a resolution of 23″(∼800 pc), and are indicated by the black circle in the lower left. The 10′×10′ field-of-view of our IRAM 30 m observation is indicated by the white rectangular outline. Contours are drawn at arbitrary intervals between 0.5 − 10 K km s⁻¹ to highlight the structure of the galaxy.