1-amino-9,10-dihydro-9,10-dioxo-4-[[3-[(1-oxopropyl)amino]phenyl]amino]anthracene-2-sulphonic acid;1-Amino-9,10-dihydro-9,10-dioxo-4-[[3-[(1-oxopropyl)amino]phenyl]amino]-2-anthracenesulfonic acid
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