cefuroxime second generation cephalosporin antibiotic molecule

cefuroxime cefuroxim cephalosporin cephalosporine second generation antibiotic antibacterial antimicrobial infection bacterium bacteria microbe microorganism axetyl ester axetil acetoxyetyl prodrug betalactamase resistance resistant cephem carbon hydrogen nitrogen sulfur sulphur oxygen molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal