imipenem antibiotic molecule, 3d

imipenem antibacterial antibiotic antimicrobial atomic atoms bacterium betalactam betalactamase carbapenem chemical chemistry composition compound drug formula intravenous lactam lactamase medical medicine microbe molecular molecule pharmaceutical pharmacological pharmacology structure 3d illustration beta resistant gramnegative gram positive negative broad spectrum sticks new delhi metallobetalactamase ndm treatment vivid color pastel