magnet:?xt=urn:btih:e646b30e55c20ee3c1b0f4e843c37fb3694a53ec&xt=urn:md5:6786877a5aa4fb28f851f332cd7f1001&xl=216262018&dn=qt-mac-opensource-4.7.1.dmg&as=https://download.qt.io/new_archive/qt/4.7/qt-mac-opensource-4.7.1.dmg&tr=http://bt.qt-project.org:6969/announce