magnet:?xt=urn:btih:d02f03ef5571b4988a2d4307fd12dd48c58f3cdd&xt=urn:md5:29ec5619f1815eebdda2217dfaafd803&xl=194146898&dn=qt-mac-cocoa-opensource-4.5.2.dmg&as=https://download.qt.io/archive/qt/4.5/qt-mac-cocoa-opensource-4.5.2.dmg&tr=http://bt.qt-project.org:6969/announce