[Chimera-users] Docking a ligand

Hello, I have a receptor molecule (pdb file of the protein) and the chemical formula for the compound that I want to dock it with. I am assuming that I need to use the viewdock program to look at the docking interactions, but I just don't know how to go about it without a structure file for the ligand molecule. Is there a simple way to generate the coordinates for the ligand from the chemical formula? I would appreciate if someone in the group can help me out with this. Thanks. Sriram