C3Y4A1N1O1C3O1B3A1L1A1M3I1N1
25 points
CYANOCOBALAMIN is validvalid
vitamin B12 [n CYANOCOBALAMINS]
vitamin B12, which has a large and complicated molecule, in one form including a cyanide group, in all forms including a cobalt atom, also CYANOCOBALAMINE [n -S]