18-Hydroxy-A(1),28-dinorlupa-2,6,20(29)-trien-27-oic acid γ-lactone
18-Hydroxy-A(1),28-dinorlupa-2,6,20(29)-trien-27-oic acid γ-lactone ??
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18-Hydroxy-A(1),28-dinorlupa-2,6,20(29)-trien-27-oic acid γ-lactone C??? ??, ??, ??
18-Hydroxy-A(1),28-dinorlupa-2,6,20(29)-trien-27-oic acid γ-lactone ?? ?? ? ???
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18-Hydroxy-A(1),28-dinorlupa-2,6,20(29)-trien-27-oic acid γ-lactone ?? ??
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