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(1S,2S,10S,12R,13R,17R,18S,20S,21S)-2,12-Dimethyl-18-propan-2-yl-7,14,16,19,22-pentaoxaheptacyclo[11.9.0.01,21.02,10.05,9.013,17.018,20]docos-5(9)-ene-6,15-dione


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