121691-39-2
7-endo-dimethyl 6b,9a-dihydro-6b,9a-dihydroxy-7H-cyclopent[a]acenaphthylene-7,9-dicarboxylate
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121691-40-5
dimethyl 11-hydroxy-7-oxocyclo-octa[de]naphthalen-8,10-dicarboxylate