Back to the overview of different vitamins 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. Vitamine B11/ Foliumzuur Chemische naam: Foliumzuur (engels: Folic acid of Folate) Molecuul Formule: C19H19N7O6 Traditionele structuurformule. 3D-ball & stick structuurformule. De PDB file getoont met Chime.