Pyrrolidine,1-[3-[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]-1-oxopropyl]-2-[[(3R)-3-hydroxy-1-pyrrolidinyl]methyl]-, (2R)-