69657-94-9 Benzeneacetamide, N-(4-bromo-9,10-dihydro-2-methyl-9,10-dioxo-1-anthracentyl)-4-methoxy- N-(4-Bromo-9,10-dihydro-2-methyl-9,10-dioxo-1-anthracentyl)-4-methoxybenzeneacetamide