xdrawchem(1) on Linux
The text 383d29eec5fe, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it.
open-source chemical structures editor similar to ChemDraw
Flags it lists
-
--help -
--version -
-3d -
-h -
-png -
-t -
-v