What best describes the pharmacologic structure of sulfapenems?
Saturated beta-lactam heterocycle
Saturated polymyxin
Unsaturated polypeptide heterocycle
O Unsaturated beta-lactam antibiotic
O Saturated polypeptide heterocycle
Saturated beta-lactam heterocycle
Saturated polymyxin
Unsaturated polypeptide heterocycle
O Unsaturated beta-lactam antibiotic
O Saturated polypeptide heterocycle