(4S)-4-etil-4-hidroksi-1H-pirano[3′,4′:6,7]indolizino[1,2-b]kinolin-3,14(4H,12H)-dion
5-[2-etoxy-5-(4-etylpiperazín-1-sulfonyl)pyridín-3-yl]-3-etyl-2-(2-metoxyetyl)-2,3,4,5,6,7-hexahydropyrazolo[4,3-d]pyrimidín-7-ón