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Diethyl cis-cyclopropane-1,2-dicarboxylate Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Adipic acid Cyclobutanemethanol Mono-methyl succinate Cyclobutanecarboxaldehyde Cyclobutanecarboxylic acid Dimethyl adipate 2-Methylsuccinic acid MESO-2,3-DIMETHYLSUCCINIC ACID

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