folinic acid, leucovorin molecule. it is folate analog, used to treat colorectal cancer, pancreatic cancer. structural chemical

acid adjuvant atom atomic blue cancer carbon chemical chemistry chemotherapy citrovorum colorectal dark drawing factor flat folate folinate folinic formula hydrogen icon illustration leucovorin leucovorine levofolinic methotrexate molecular molecule nitrogen organic oxygen pancreatic skeletal structural structure tumor vector white