1,3-bis-([3-[3-[3-(4-{3-[3-nitro-5-(galactopyranosyloxy)-benzoylamino]-propyl}-piperazin-1-yl)-propylamino-3,4-dioxo-cyclobutenyl]-amino-propoxy-ethoxy-ethoxy]-propyl-]amino-carbonyloxy)-2-amino-propane

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