Disclosed are pharmaceutical compositions comprising a lyophilized compound of formula (I):or a pharmaceutically acceptable salt thereof, and methods of using the same for treating cancer.本發明揭露了藥物組成物,該等藥物組成物包含具有式 (I) 之凍乾的化合物:或其藥學上可接受的鹽;和使用該等藥物組成物用於治療癌症之方法。