12-(Acetyloxy)-4-ethyl-4-hydroxy-1H-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H,12H)-dione 1H-Pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4H,12H)-dione, 12-(acetyloxy)-4-ethyl-4-hydroxy- 74418-04-5