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... YCLOBUTE ... (2 elements)

... CLOBUTE ... (2 elements)

BENZOCYCLOBUTENE · CYCLOBUTENE

... YCLOBUT ... (15 elements)

BENZOCYCLOBUTENE · CYCLOBUTADIEN · CYCLOBUTADIENE · CYCLOBUTADIENEIRON · CYCLOBUTAN · CYCLOBUTENE · CYCLOBUTYL · CYCLOBUTYLMETHYL · CYCLOBUTYNE · TRICYCLOBUTABENZENE

... CYCLOBUTE ... (2 elements)

BENZOCYCLOBUTENE · CYCLOBUTENE

... YCLOBUTEN ... (2 elements)

BENZOCYCLOBUTENE · CYCLOBUTENE