O(C)C1CC(C(=O)NC(C)(C)C)N(C1)C(=O)C(=O)C(NC(=O)OCc2ccccc2)Cc3ccccc3.COC4CC(C(=O)NC(C)(C)C)N(C4)C(=O)C(=O)C(NC(=O)OCc5ccccc5)Cc6ccccc6