Via this page, you can look at the vitamins in the traditional structure formula, the 3D-ball & stick structure formula and the Chime (PDB) file. With help of the PDB file, you can turn the molecule, on it zoom in and yet much more.
When you can not open the PDB files you probably have not the free plug-in Chime.
You can download Chime, after registration, free of charge by clicking here.