(11S,12R,15S,24S,25S)-12,25-Dihydroxy-18,19,20-trimethoxy-11,12,24,25-tetramethyl-4,6,9,14-tetraoxapentacyclo[13.7.3.0^3,7.0^8,22.0^16,21]pentacosa-1(22),2,7,16,18,20-hexaen-13-one

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