MCXC J1700.7+6412, a system with two components at different redshifts. MCXC detects the two components separately, while RXGCC detects the system as a whole. We have associated RXGCC to the MCXC with a stronger contribution to the X-ray emission. The left and right panels show the RASS and XMM-Newton images, respectively. The positions of MCXC J1700.7+6412 (z = 0.225) and MCXC J1701.3+6414 (z = 0.453) are marked with a light and dark blue cross, respectively. The position of RXGCC 687 (z = 0.239) is marked with a small red circle. The corresponding solid and dashed circles represent the size θ₅₀₀ of the clusters and their aperture radius. The green and orange pluses represent the position of two optical clusters: WHL J170041.8+641259, with an spectroscopic redshift of z = 0.2350 (Wen & Han 2015), and WHLJ170123.5+641411, with an spectroscopic redshift of z = 0.4521 (Wen et al. 2009, 2010). The magenta plus shows the position of Abell cluster Abell 1035.