Fused cyclopentane-4-substituted 3,5-dioxalane lactone compounds useful as an intermediate in the synthesis of prostaglandin analogs are provided. An enabling logic connects the prefix length value to a wired OR plane common to all CAM cells, and a sequential bit wise comparison unit has its inputs connected to the wired OR plane and the additional storage unit with its output controlling the enabling logic. The first substrate and the second substrate include a dielectric layer.