Oc1c(cc(CCC(=O)OCC(COC(=O)CCc2cc(c(O)c(c2)C(C)(C)C)C(C)(C)C)(COC(=O)CCc3cc(c(O)c(c3)C(C)(C)C)C(C)(C)C)COC(=O)CCc4cc(c(O)c(c4)C(C)(C)C)C(C)(C)C)cc1C(C)(C)C)C(C)(C)C