And estrone is one of important female hormones and is a useful substance as {HEAD ~ an intermediate} to {TAIL ~ medicines} for the therapy of prostatic hypertrophy and other steroid type medicines 
And estrone is one of important female hormones and is a useful substance as { HEAD ~ an intermediate } to { TAIL ~ medicines } for the therapy of prostatic hypertrophy and other steroid type medicines
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH