COC(=O)/C=C1\C=C2O[C@@H](C1)C[C@H]([C@@H](C)O)OC(=O)C[C@H](O)C[C@@H]1C[C@H](OC(=O)C(C)(C)C)C(C)(C)[C@](OC)(C[C@@H]3C/C(=C/C(=O)OC)C[C@H](/C=C/C2(C)C)O3)O1	9-O-methylbryostatin 17