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  • [5-sec-butyl-18-methyl-11-(2-nitro-cyclopropylmethyl)-4,7,10,13,16,20-hexaoxo-8,14-bis-(1-phenyl-ethyl)-2-propenyl-octadecahydro-19-oxa-3a,6,9,12,15-pentaaza-cyclopentacyclononadecen-17-yl]-carbamic acid 4-methyl-benzyl ester

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