"C1176316" . "tadalafil"@en . "C429886" . . "tadalafil"@en . . . . . "Pyrazino(1',2':1,6)pyrido(3,4-b)indole-1,4-dione, 6-(1,3- benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-methyl-, (6R,12aR)-"@en .