keribat (INNRG)
N-acetyl-O-tert-butyl-L-tyrosyl-O-tert-butyl-L-treonyl-O-tert-butyl-L-seryl-L-leucyl-L-isoleucyl-N1-trityl-L-histidyl-O-tert-butyl-L-seryl-L-leucyl-L-isoleucyl-α-L-glutamyl-α-L-glutamyl-O-tert-butyl-L-seryl-N-trityl-L-glutaminyl-N-trityl-L-asparaginyl-N-trityl-L-glutaminyl-L-glutamin, 10,11-di-tert-butylester