Sopromidine

1-[(2R)-1-(1H-imidazol-5-yl)propan-2-yl]-2-[2-[(5-methyl-1H-imidazol-4-yl)methylsulfanyl]ethyl]guanidine

1-[(1R)-2-(1H-imidazol-5-yl)-1-methyl-ethyl]-2-[2-[(5-methyl-1H-imidazol-4-yl)methylthio]ethyl]guanidine

1-[(R)-2-[1H-Imidazol-4-yl]-1-methylethyl]-3-[2-[[(5-methyl-1H-imidazol-4-yl)methyl]thio]ethyl]guanidine