{TAIL ~ The manganese compound} is supplied in an amount effective to complex with {HEAD ~ the combustion byproduct} 
{ TAIL ~ The manganese compound } is supplied in an amount effective to complex with { HEAD ~ the combustion byproduct }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD