Figure 22.
Structures of 20-acetoxy-19-hydroxyspongia-13(16),14-diene 95, 19-acetoxy-20-hydroxyspongia-13(16),14-diene 96, 19,20-diacetoxyspongia-13(16),14-diene 97, and 19,20-dihydroxyspongia-13(16),14-diene 98.
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