CC(C)C[C@@H]1NC(=O)[C@H](C(C)C)NC(=O)[C@H](Cc2ccc(O)cc2)N(C)C(=O)[C@H](Cc2ccccc2)NC(=O)CN(C)C(=O)[C@@H]2CCCN2C(=O)[C@@H](Cc2ccccc2)N(C)C1=O cordyheptapeptide C