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?? ???? >(1R)-1β-Methyl-2,8-dimethylenegibbane-4aα,10β-dicarboxylic acid dimethyl ester
(1R)-1β-Methyl-2,8-dimethylenegibbane-4aα,10β-dicarboxylic acid dimethyl ester
(1R)-1β-Methyl-2,8-dimethylenegibbane-4aα,10β-dicarboxylic acid dimethyl ester ??
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(1R)-1β-Methyl-2,8-dimethylenegibbane-4aα,10β-dicarboxylic acid dimethyl ester C??? ??, ??, ??
(1R)-1β-Methyl-2,8-dimethylenegibbane-4aα,10β-dicarboxylic acid dimethyl ester ?? ?? ? ???
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(1R)-1β-Methyl-2,8-dimethylenegibbane-4aα,10β-dicarboxylic acid dimethyl ester ?? ??
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