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(1S,2S,10S,12R,13R,17R,18S,19R,20S)-18-Hydroxy-2,12,19-trimethyl-18-propan-2-yl-7,14,16,21-tetraoxahexacyclo[11.8.0.01,20.02,10.05,9.013,17]henicos-5(9)-ene-6,15-dione


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