chemeq(1) on Linux
The text 9b70167307ac, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it.
Chemical Equation Parser and Renderer
Flags it lists
-
-C -
-M -
-W -
-c -
-e -
-h -
-l -
-m -
-n -
-s -
-v -
-w