{HEAD ~ The CO} of {TAIL ~ the second stream} is reacted with water to produce formic acid 
{ HEAD ~ The CO } of { TAIL ~ the second stream } is reacted with water to produce formic acid
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH