Comparison of the nuclear molecular rings of NGC 4194 (left) and NGC 1614 (right, König et al. 2013). The images are scaled to represent a field of view of ~2000 pc. Contours emphasized in red represent the CO 2−1 ring structures in the Medusa (1′′~ 189 pc) and NGC 1614 (1′′~ 310 pc); green crosses mark the positions of the GMAs in the Medusa and NGC 1614. Black crosses represent the UV-identified star clusters (Weistrop et al. 2004), and black circles indicate the star clusters identified in visible light in a 0.5′′ wide slit (Hancock et al. 2006) in the Medusa.