pls answer (a),(c),(d)

Practice Example Penicillin G is a commonly use antibiotic, its structure is given below a) Identify and name four of the functional group in penicillin b) Redraw the structure, adding all unshared electron pairs c) What is the molecular formula of penicillin ? d) Identify the most polarised covalent bonds eg amide sulfide S CH3 CH3 .C-NH J & OH carboxylic acid RCSI