libgcu-dbg 0.14.9-1ubuntu1 (amd64 binary) in ubuntu wily

 The GNOME Chemistry Utils provide C++ classes and Gtk+-2 widgets
 related to chemistry. They will be used in future versions of both
 gcrystal and gchempaint.
 .
 This package provides the debugging symbols for the library and
 the utilities provided by the gcu-bin and gcrystal packages.
 Install it to get a meaningful backtrace in case of a crash.