InChI=1/C21H18N2O4/c1-3-27-21(25)16-11-15-17(26-2)10-9-14-18(15)19(22-16)23(20(14)24)12-13-7-5-4-6-8-13/h4-11H,3,12H2,1-2H ethyl 1-benzyl-5-methoxy-2-oxo-1,2-dihydropyrrolo[4,3,2-ij]isoquinoline-7-carboxylate pyrrolo[4,3,2-ij]isoquinoline-7-carboxylic acid, 1,2-dihydro-5-methoxy-2-oxo-1-(phenylmethyl)-, ethyl ester