magnet:?xt=urn:btih:f0cb9a6474b3fc4b63c6034964b8a2df56ae7965&xt=urn:md5:5c8bdd3ff9bb8634431c10c1f24e176f&xl=754494789&dn=qt-mac-opensource-4.7.2-debug-libs.dmg&as=https://download.qt.io/new_archive/qt/4.7/qt-mac-opensource-4.7.2-debug-libs.dmg&tr=http://bt.qt-project.org:6969/announce