magnet:?xt=urn:btih:af22eaa8ebefe6a17a5db55e20ab569f0f6e9984&xt=urn:md5:7e74be0cc6312f568cec91cfb3d6e39b&xl=756520224&dn=qt-mac-opensource-4.7.4-debug-libs.dmg&as=https://download.qt.io/archive/qt/4.7/qt-mac-opensource-4.7.4-debug-libs.dmg&tr=http://bt.qt-project.org:6969/announce