Ergosta-1,4-dien-3-one,7-hydroxy-22,24,25-[propylidynetris(oxy)]-, [7a,22R(S)]-; 2,7,8-Trioxabicyclo[3.2.1]octane,ergosta-1,4-dien-3-one deriv.; (+)-Petuniasterone M; Petuniasterone M
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