Patent ID: 8518927

Claim:
The compound of formula V: wherein R 1 is and wherein the Linker is: —NHC(═O)(CH 2 ) 3 C(═O)NH—, —NHC(═O)(CH 2 ) 3 C(═O)NH(CH 2 ) 3 —, —NHC(═O)(CH 2 ) 3 C(═O)NH(CH 2 ) 2 (OCH 2 CH 2 ) 2 —, —(CH 2 ) 3 NHC(═O)(CH 2 ) 3 C(═O)NH—, —O(CH 2 CH 2 O) 3 (CH 2 ) 2 NHC(═O)(CH 2 ) 3 C(═O)NH—,