Pyrrolidine,1-[[5-[(Z)-[5-[[(2,6-dichlorophenyl)methyl]sulfonyl]-1,2-dihydro-2-oxo-3H-indol-3-ylidene]methyl]-2,4-dimethyl-1H-pyrrol-3-yl]acetyl]-2-[(4-fluoro-1-piperidinyl)methyl]-, (2S)-