CC(C)(C)C1=CC(CN2C(=O)N(CC3=CC(=C(O)C(=C3)C(C)(C)C)C(C)(C)C)C(=O)N(CC3=CC(=C(O)C(=C3)C(C)(C)C)C(C)(C)C)C2=O)=CC(=C1O)C(C)(C)C