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1H-lmidazolium,2-[[(4S,5S)-1,3-DimiEthyl-4,5-DiPhenyl-2-Imidazolinydene]Amino]-4,5-Dihydro-1,3-DiMethyl-4,5-DiPhenyl-,choride(1:1),(4S,5S)- 95%