I need to build a new molecular group containing number of atoms more than 30. Can you suggest a free download software to build a molecule only by giving chemical formula as input?
Good day!
HyperChem available at http://www.hyper.com/ free 10 days.
Best regards
you can use ChemIDplus or the chemaxon suite both free
I am not sure if it is exactly what you need, but you can try MolGen (http://molgen.de/?src=documents/molgenonline).
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