bkchem software package provides Chemical structures editor, 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 bkchem
bkchem is installed in your system.
Make ensure the bkchem package were installed using the commands given below,
$ sudo dpkg-query -l | grep bkchem *
You will get with bkchem package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Science |
| Package | bkchem |
| Version | 0.13.0-5 |
| Description | Chemical structures editor |
| Sub Section | Science |