2-(3,4-dichlorophenyl)-5-phenyl-1,3,4-oxadiazole, also known as DCPO.
 
It is a white to off-white crystalline powder commonly used in the pharmaceutical industry for its antifungal and antimicrobial properties.
 
However, caution must be taken when handling DCPO as it is classified as a hazardous substance with codes H302 (harmful if swallowed) and H411 (toxic to aquatic life with long-lasting effects) according to the MSDS.
 
Proper personal protective equipment must be used when handling DCPO.