發送短信 : Constituents of boesenbevgia sp. isolation and crystal structure of crotepoxide ([lr-(lα,2α,4α,5β,6α,7α)]-4-[(benzoyloxy)methyl]- 3,8-dioxatricyclo[5,1,0,0<sup>2,4</sup>]octane-5,6-diyl diacetate)

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