. . . . . . . . . . . . . . . . . . . . . . . . . . "dimethyl (1R,4S)-5,6-bis(4-hydroxyphenyl)-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate"@en . . . . . "experimental"@en . . . . .