4-[[2-butyl-5-[(Z)-[1-butyl-3-[(2-methyl-1,3-thiazol-4-yl)methyl]-2,5-dioxoimidazolidin-4-ylidene]methyl]imidazol-1-yl]methyl]benzoic acid 4-[[2-butyl-5-[(Z)-[1-butyl-3-[(2-methylthiazol-4-yl)methyl]-2,5-dioxo-imidazolidin-4-ylidene]methyl]imidazol-1-yl]methyl]benzoic acid 4-[[2-butyl-5-[(Z)-[1-butyl-3-[(2-methyl-4-thiazolyl)methyl]-2,5-dioxo-4-imidazolidinylidene]methyl]-1-imidazolyl]methyl]benzoic acid 4-[[2-butyl-5-[(Z)-[1-butyl-2,5-diketo-3-[(2-methylthiazol-4-yl)methyl]imidazolidin-4-ylidene]methyl]imidazol-1-yl]methyl]benzoic acid 4-[[2-butyl-5-[(Z)-[1-butyl-3-[(2-methyl-1,3-thiazol-4-yl)methyl]-2,5-dioxo-imidazolidin-4-ylidene]methyl]imidazol-1-yl]methyl]benzoic acid