magnet:?xt=urn:btih:da2847901d33017757efa1d07a7b6cb26ffc49c8&xt=urn:md5:ed6ae67f9f9fb39ba78e47642150f8e2&xl=272301242&dn=qt-mac-opensource-4.5.1-debug-libs.dmg&as=https://download.qt.io/archive/qt/4.5/qt-mac-opensource-4.5.1-debug-libs.dmg&tr=http://bt.qt-project.org:6969/announce