英文别名Tadalafil Impurity 18; (12bR)-6-(1,3-Benzodioxol-5-yl)-12-hydroxy-2-methyl-2,3,6,12b-tetrahydropyrazino[1′,2′:1,5]pyrrolo[3,4-b]quinoline-1,4-dione; Pyrazino[1',2':1,5]pyrrolo[3,4-b]quinoline-1,4-dione, 6-(1,3-benzodioxol-5-yl)-2,3,6,12b-tetrahydro-12-hydroxy-2-methyl-, (12bR)- 
