3BC 3bc TERT-BUTYL [(1S)-1-({(1R,2S,5S)-2-[(3S,10S)-3-(CYCLOPROPYLMETHYL)-12-METHYL-4,5,8,11-TETRAOXO-10-PHENYL-2,6,9,12-TETRAAZATRIDECAN-1 -OYL]-6,6-DIMETHYL-3-AZABICYCLO[3.1.0]HEX-3-YL}CARBONYL)-2,2-DIMETHYLPROPYL]CARBAMATE 3BC