英文别名cis-Tadalafil; 6R,12S-Tadalafil; (6R,12aS)-6-(1,3-benzodioxol-5-yl)-2-Methyl-2,3,6,7,12,12a-hexahydropyrazino[1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione; Tadalafil Impurity H; Tadalafil EP Impurity A; cis-ent-Tadalafil; PYR403; 12-epi-Tadalafil; Tadalafil Impurity 13; (6R,12aS)-2,3,6,7,12,12a-hexahydro-2-methyl-6-(3,4-methylenedioxyphenyl)-pyrazino[2',1':6,1]pyrido[3,4-b]indole-1,4-dione