Restore deleted iTunes backup of iPhone I mistakenly deleted the latest backup for my iPhone from within iTunes preferences. How can I recover it?

I looked into ~/Library/Application Support/MobileSync/Backup and it is not there anymore. Where can I find the deleted folder containing the last backup?

I have a MacBook Air running Mac OS X El Capitan and an iPhone 5C running iOS 9.3.5.
Start by looking for it in Trash. If not, than a Time Machine backup. If not, try recovering it using a recovery software. The backup folder generally contain many files with cryptic names like 0d0c1bdbcfa1d8f0cde357e7a4ab3db7783e26ff and it may not be easy to deduce the correct one out of them.