(2R)-2α-(3,4-Dimethoxyphenyl)-3,4-dihydro-5,7-dimethoxy-2H-1-benzopyran-3α-ol;(2R)-2α-(3,4-Dimethoxyphenyl)-5,7-dimethoxy-3,4-dihydro-2H-1-benzopyran-3α-ol;(2R)-2α-(3,4-Dimethoxyphenyl)-5,7-dimethoxychroman-3α-ol
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