{HEAD ~ The composition} comprises {TAIL ~ an amount}, effective for the intended purpose, of 2 bromo 2 nitropropane 1, 3 diol and methyl sulfonyl acrylonitrile  
comprises
{ HEAD ~ The composition } comprises { TAIL ~ an amount } , effective for the intended purpose , of 2 bromo 2 nitropropane 1 , 3 diol and methyl sulfonyl acrylonitrile
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH