Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
application()
application(qt5-designer.desktop)
libcontainerextension.so
libcustomwidgetplugin.so
libqquickwidget.so
libtaskmenuextension.so
libworldtimeclockplugin.so
mimehandler(application/x-designer)
qt5-designer
qt5-designer(x86-32)

Requires :

libstdc++.so.6(GLIBCXX_3.4)
libQt5Gui.so.5(Qt_5)
libpthread.so.0
libQt5PrintSupport.so.5(Qt_5)
libQt5Designer.so.5
rtld(GNU_HASH)
libm.so.6
libQt5Widgets.so.5(Qt_5)
libc.so.6(GLIBC_2.4)
libQt5Network.so.5(Qt_5)
libgcc_s.so.1
libQt5Core.so.5(Qt_5)
libc.so.6(GLIBC_2.1.3)
libQt5Widgets.so.5
rpmlib(PayloadIsXz) <= 5.2-1
libQt5DesignerComponents.so.5(Qt_5_PRIVATE_API)
libQt5PrintSupport.so.5
libQt5QuickWidgets.so.5(Qt_5)
libGL.so.1
libQt5Xml.so.5
libQt5Xml.so.5(Qt_5)
libc.so.6(GLIBC_2.0)
libQt5Quick.so.5
libQt5Qml.so.5
/bin/sh
libQt5Gui.so.5
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libQt5DesignerComponents.so.5
libQt5Designer.so.5(Qt_5)
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libstdc++.so.6
rpmlib(PartialHardlinkSets) <= 4.0.4-1
libQt5Quick.so.5(Qt_5)
libQt5QuickWidgets.so.5
qt5-qttools-libs-designercomponents(x86-32) = 5.6.2-1.el7
libQt5Network.so.5
libQt5Core.so.5
libQt5Core.so.5(Qt_5.6)
qt5-qttools-libs-designer(x86-32) = 5.6.2-1.el7
libstdc++.so.6(CXXABI_1.3)
libc.so.6
libc.so.6(GLIBC_2.3.4)

Content of RPM :
/usr/bin/designer-qt5
/usr/lib/cmake/Qt5Designer
/usr/lib/cmake/Qt5Designer/Qt5Designer_AnalogClockPlugin.cmake
/usr/lib/cmake/Qt5Designer/Qt5Designer_MultiPageWidgetPlugin.cmake
/usr/lib/cmake/Qt5Designer/Qt5Designer_QQuickWidgetPlugin.cmake
/usr/lib/cmake/Qt5Designer/Qt5Designer_TicTacToePlugin.cmake
/usr/lib/cmake/Qt5Designer/Qt5Designer_WorldTimeClockPlugin.cmake
/usr/lib/qt5/bin/designer
/usr/lib/qt5/bin/designer-qt5
/usr/lib/qt5/plugins/designer/libcontainerextension.so
/usr/lib/qt5/plugins/designer/libcustomwidgetplugin.so
/usr/lib/qt5/plugins/designer/libqquickwidget.so
/usr/lib/qt5/plugins/designer/libtaskmenuextension.so
/usr/lib/qt5/plugins/designer/libworldtimeclockplugin.so
/usr/share/applications/qt5-designer.desktop
/usr/share/icons/hicolor/32x32/apps/designer-qt5.png