The present invention is directed to an angiotensin II (ANG II) receptor agonist, more specifically an agonist of Ang II type 2 receptor (AT2 receptor), and particularly an AT2 receptor for treatment of pulmonary fibrosis, especially for idiopathic pulmonary fibrosis The present invention relates to a novel use of a compound which is an agonist to be combined. Diagram本発明は、肺線維症、特に特発性肺線維症の治療処置のための、アンギオテンシンII(Ang II)受容体作動薬、より具体的には、Ang II2型受容体(AT2受容体)の作動薬、及び特にAT2受容体に選択的に結合する作動薬である化合物の新規使用に関する。【選択図】図1