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Continue to ChatMetal-free and metallophthalocyanines appending with eight 12-crown-4 ethers - https://avesis.ktu.edu.tr/yayin/21015d0b-f508-4027-aaf6-b73c1da1856c/metal-free-and-metallophthalocyanines-appending-with-eight-12-crown-4-ethers