Y is CHCNR4 R5, wherein R4 is chosen from {HEAD ~ the group} consisting of H, alkyl, n cycloalkyl, n NHC alkyl, arylalkyl, CCH2 OR10, CC, {TAIL ~ alkyl NHSO2 R11}, CC NHR10, and CCNHCCONHR10, wherein n=1 3, 
consisting of
Y is CHCNR4 R5 , wherein R4 is chosen from { HEAD ~ the group } consisting of H , alkyl , n cycloalkyl , n NHC alkyl , arylalkyl , CCH2 OR10 , CC , { TAIL ~ alkyl NHSO2 R11 } , CC NHR10 , and CCNHCCONHR10 , wherein n=1 3 ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH