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(1S,4R,5S,16R,18S,22S)-4,5,27,27-Tetramethyl-19,21,28,29-tetraoxa-7-azaoctacyclo[24.2.1.01,23.04,22.05,16.06,14.08,13.018,22]nonacosa-6(14),8,10,12,23-pentaene-20,25-dione


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