【ingredients】
the mian ingredient of the drug is pioglitazone hydrochloride. chemically structural formula：
chemical name:（±）5-[[4-[2-（5-ethyl-2-pyridyl）ethoxyl]benzyl]-2，4- thiazolidinedione hydrochloride
molecular formula：c19h20n2o3s·hcl
molecular weight：392.90
