{TAIL ~ Some animals} received {HEAD ~ the free base} of 4 amino 2 ethoxymethyl α,α dimethyl 1H imidazoquinoline 1 ethanol po 
{ TAIL ~ Some animals } received { HEAD ~ the free base } of 4 amino 2 ethoxymethyl α , α dimethyl 1H imidazoquinoline 1 ethanol po
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH