chemtool software package provides chemical structures drawing program, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install chemtool
chemtool is installed in your system.
Make ensure the chemtool package were installed using the commands given below,
$ sudo dpkg-query -l | grep chemtool *
You will get with chemtool package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Science |
| Package | chemtool |
| Version | 1.6.14-1 |
| Description | chemical structures drawing program |
| Sub Section | Science |