2-(4-(((4-(2,5-Dihydro-2-oxo-5-((1-phenyl-1H-tetrazol-5-yl)thio)-4-oxazolyl)phenoxy)acetyl)amino)phenyl)-1-octadecyl-1H-benzimidazole-5-sulphonic acid 68978-46-1 EINECS 273-485-1