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Dimethylarsinic acid ( DMAs ( V ) ) , the major urinary metabolite of inorganic arsenic , is weakly cytotoxic , whereas its reduced form , dimethylarsinous acid ( DMAs ( III ) ) , is highly toxic .
 Chemical: Dimethylarsinic acid; Chemical: DMAs ( V ); Chemical: arsenic; Chemical: dimethylarsinous acid; Chemical: DMAs ( III )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Dimethylarsinic acid; Chemical: DMAs ( V ); Chemical: arsenic; Chemical: dimethylarsinous acid; Chemical: DMAs ( III )