label: 7,8-dihydroxy-5,6-epoxy-1,4-dimethyl-5,6,7,8-tetrahydrophenanthrene, (1Aalph, 2beta, 3alpha, 9Calpha)(+-)-isomer
label_lc: 7,8-dihydroxy-5,6-epoxy-1,4-dimethyl-5,6,7,8-tetrahydrophenanthrene, (1aalph, 2beta, 3alpha, 9calpha)(+-)-isomer