(3S)-4-[[1-[(1-amino-6-isoquinolinyl)methyl]-2-oxo-2-(1-piperidinyl)ethyl]amino]-3-[[(phenylmethyl)sulfonyl]amino]-4-oxo-butanoic acid 1,1-dimethylethylester hydrochloride (HCID 69780956)|Huagongshe