(E)-3-(3,4-methylenedioxybenzylidene)-6,7-dimethoxyphthalimidin-2-ylacetic acid

5,6,13,13a-tetrahydro-2,3,9,10-tetramethoxy-7-methyl-5-oxo-8H-dibenzo[a,g][3]quinolizinium iodide ethylene acetal