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