start_compound('Ammonia','C00014').
start_compound('Sulfate','C00059').
start_compound('Biotin','C00120').
start_compound('Calcium','C00076'). 
start_compound('Pantothenate','C00864').
start_compound('Folic acid','C00504').
start_compound('Inositol','C00137').
start_compound('Niacin','C00253').
start_compound('p-Aminobenzioc acid','C00568').
start_compound('Pyridoxine','C00314').
start_compound('Riboflavin','C00255').
start_compound('Thiamin','C00378'). 
start_compound('Chloride','C00115').
start_compound('Boron','C06266').
start_compound('Copper','C00070').
start_compound('Potassium iodide','C08219').
start_compound('Iron','C00023').
start_compound('Manganese','C00034').
start_compound('Sodium','C01330').
start_compound('Zinc','C00038').
start_compound('Potassium','C00238').
start_compound('Phosphate','C00009').
start_compound('Molybdate','C06232').
start_compound('Magnesium','C00305').
start_compound('Calcium chloride','C08130').
start_compound('Uracil','C00106').
start_compound('L-Methionine','C00073').
start_compound('L-Leucine','C00123').
start_compound('alpha-D-Glucose','C00267').
start_compound('L-Histidine','C00135').
start_compound('Water','C00001').
start_compound('H+','C00080').
