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tetramethyl 6,9,19,22-tetraoxa-3,12,16,25-tetraaza-1,14(1,3)-dibenzenacyclohexacosaphane-3,12,16,25-tetracarboxylate
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octamethyl 6,9,19,22,32,35,45,48-octaoxa-3,12,16,25,29,38,42,51-octaaza-1,14,27,40(1,3)-tetrabenzenacyclodopentacontaphan-3,12,16,25,29,38,42,51-octacarboxylate
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