Octopus118 [1] filed a deletion request for synthesis [2]: This package no longer exists for linux upstream (https://github.com/Autodesk/synthesis/releases/tag/v7.1.0). It now runs in the browser.
[1] https://aur.archlinux.org/account/Octopus118/ [2] https://aur.archlinux.org/pkgbase/synthesis/
