label: 6alpha-acetoxy-23alpha-ethoxy-16beta,23(R)-epoxy-24,25,26,27-tetranor-9,19-cyclolanosta-3-O-(beta-D-(4'-trans-2-butenoyl))xyloside
label_lc: 6alpha-acetoxy-23alpha-ethoxy-16beta,23(r)-epoxy-24,25,26,27-tetranor-9,19-cyclolanosta-3-o-(beta-d-(4'-trans-2-butenoyl))xyloside