Imidazo[1,5-a]pyrazine-2(3H)-propanoic acid, 7-[[(6S)-5-(ethoxycarbonyl)-6-(3-fluoro-2-methylphenyl)-3,6-dihydro-2-(2-thiazolyl)-4-pyrimidinyl]methyl]hexahydro-α,α-dimethyl-3-oxo-, (8aS)- [ 1808248-05-6 ]