Get your pdb file with CORINA web server from SMILES code Alternatively use the PRODRG2 Server
This is an implementation of Marvin, you can create new structures or open structure files and then visualise or perform calculations.
Various structure based calculations are available from the "Tools" menu using the Calculator Plugins. Notice that for some calculation results MarvinSpace can be used and this will require Open GL to be installed on your computer. If this does not load automatically please visit MarvinSpace Troubleshooting
The Chemical Terms Evaluator is designed to evaluate mathematical expressions on molecules using built-in chemical and general purpose functions. It is equipped with chemical plugin calculations, chemical substructure search and some additional chemical and general purpose functions.