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[1]Yang;Kaplan[TetrahedronLetters,2000,vol.41,#36,p.7005-7008]
[1]Yang;Kaplan[TetrahedronLetters,2000,vol.41,#36,p.7005-7008]
[1]Yang;Kaplan[TetrahedronLetters,2000,vol.41,#36,p.7005-7008]