{HEAD ~ The present invention} discloses compounds of Formula , or pharmaceutically acceptable salts, {TAIL ~ esters}, or prodrugs thereof: 
{ HEAD ~ The present invention } discloses compounds of Formula , or pharmaceutically acceptable salts , { TAIL ~ esters } , or prodrugs thereof :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH