C=CC(C)(C)c1ccc2c3c(c[nH]c13)C[C@@H](CO[C@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O)NC(=O)C([C@@H](C)CC)N2C methylpendolmycin-14-O-α-glucoside