That did it. Thank you. Below is the final relevance. It can be used to detect CVE-2019-5786 as described by Google: https://security.googleblog.com/2019/03/disclosing-vulnerabilities-to-protect.html
exists
(
(
if
(
windows of operating system
)
then
(
versions of regapps "chrome.exe"
)
else
(
if
(
mac of operating system
)
then
(
versions of applications "Google Chrome.app"
)
else
(
versions of
(
(
packages of debianpackages
)
whose
(
name of it contains "google-chrome"
)
)
)
)
)
whose
(
it as string as version < version "72.0.3626.121"
)
)