magnet:?xt=urn:btih:c0cf4cb2c64798c41a8b6232befab27cda260d37&xt=urn:md5:d3f320008be9cb7bee82a776f74b8f3a&xl=67638554&dn=qt-mac-opensource-4.3.0.dmg&as=https://download.qt.io/archive/qt/4.3/qt-mac-opensource-4.3.0.dmg&tr=http://bt.qt-project.org:6969/announce