chemical formula, structural formula and 3d ball-and-stick model of the anticancer drug pemetrexed, white background

and anticancer antimetabolite antineoplastic atom background ball biology cancer chemical chemistry chemotherapy dihydrofolate drug effects folate formula illustration inhibitor lung medicine mesothelioma model molecule nitrogen organic oxygen pemetrexed pharmaceutical prescription reductase research science side skeletal stick structural structure synthase thymidylate white