general formula of penicillin pcn molecule. it is a group of antibiotics. structural chemical formula and molecule model

antibacterial antibiotic antimicrobial atom bacteria bacterial benzylpenicillin beta carbon cell chemical chemistry compound disease drug education formula fungi fungus hydrogen illustration infection lactam microbe microbiology model mold molecule nitrogen organic oxygen pcn penicillin penicillium peptidoglycan pharmaceutical phenoxymethylpenicillin science staphylococcus structural structure study sulphur vector