{HEAD ~ The substance} having {TAIL ~ such property} is a compound which based on spectral data and other physical properties is believed may be represented by Formula I 
having
{ HEAD ~ The substance } having { TAIL ~ such property } is a compound which based on spectral data and other physical properties is believed may be represented by Formula I
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