Chemsketch.molecules is simpler.

image generated using chemsketch

The program allows you to create images useful in the work of a chemist. The most important of its functions include:      * The ability to independently create designs for structural and submitting them to the finished components supplied with the program.      * presentation of the structures in two and three dimensions.      * the ability to create equations and reaction pathways of synthesis with the use of structural models and        aggregated.      * The ability to draw chemical equipment through its "submission" with ready-made elements.      * The ability to independently create different types of chemical graphics, such as kinetic curves.

                        

The program in its basic version is free for noncommercial use and can be downloaded from the manufacturer. The paid version is extended on the dictionary containing the chemical structural formula and a summary of chemical compounds. want to try on your own?download here.