  We examine the propagation and interaction properties of three successive
coronal mass ejections (CMEs) from 2001 November 21-22, with a focus on their
connection with the behaviors of the associated long-duration complex type II
radio burst. In combination with coronagraph and multi-point in situ
observations, the long-duration type II burst provides key features for
resolving the propagation and interaction complexities of the three CMEs. The
two CMEs from November 22 interacted first and then overtook the November 21
CME at a distance of about 0.85 AU from the Sun. The time scale for the shock
originally driven by the last CME to propagate through the preceding two CMEs
is estimated to be about 14 and 6 hr, respectively. We present a simple
analytical model without any free parameters to characterize the whole
Sun-to-Earth propagation of the shock, which shows a remarkable consistency
with all the available data and MHD simulations even out to the distance of
Ulysses (2.34 AU). The coordination of in situ measurements at the Earth and
Ulysses, which were separated by about $71.4^{\circ}$ in latitude, gives
important clues for the understanding of shock structure and the interpretation
of in situ signatures. The results also indicate means to increase
geo-effectiveness with multiple CMEs, which can be considered as another
manifestation of the "perfect storm" scenario proposed by [liu14a] although the
current case is not "super" in the same sense as the 2012 July 23 event.
