17391-09-2

Spiro[3H-indole-3,6'(4'aH)-[1H]pyrano[3,4-f]indolizine]-4'-carboxylicacid, 1,2,5',5'a,7',8',10',10'a-octahydro-5,6-dimethoxy-1'-methyl-2-oxo-,methyl ester, (1'S,3S,4'aS,5'aS,10'aS)-