4-[[2-[(5-Chloro-2-pyridinyl)amino]-2-oxoacetyl]amino]-3-[[(4,5,6,7-tetrahydro-5-methylthiazolo[5,4-c]pyridin-2-yl)carbonyl]amino]-, ethyl ester, (1S,3R,4S)-cyclohexanecarboxylic acid