i'm looking for a minimal decomposition in terms of Cnot for the 4 qubit QFT circuit in the 7 qubit architecture reported in figure. I'm using qubits 0,2,4,6 as ancillas for my QPE algorithm. The qiskit transpile option give me a 51 cnot long circuit but i'm trying to figure out if there is a better decompositionenter image description here



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