Photographic element containing a coupler capable of releasing {TAIL ~ a photographically useful group} through {HEAD ~ a triazole group} 
Photographic element containing a coupler capable of releasing { TAIL ~ a photographically useful group } through { HEAD ~ a triazole group }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD