This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
ButhioninesulfoximinezwitterionDballs. Ballandstick model of the buthionine sulfoximine molecule sulfoxime used in chemotherapy This image shows the zwitterionic form Colourcode Carbon black FFF Hydrogen white FEE Oxygen red CFA Nitrogen blue FAEB Sulfur yellow own DS Visualizer Jynto talk Zwitterionic form spacefilling version