P(O)(=O)(OCC1CC(OP(O)(=O)OCC2CC(O)C(O2)N3C=Nc4c(N)ncnc34)C(O1)N5C=Nc6c(N)ncnc56)OC7CC(COC(=O)CCC(=O)OC8CCC9(C)C(=CCC%10C%11CCC(C(C)CCCC(C)C)C%11(C)CCC9%10)C8)OC7N%12C=Nc%13c(N)ncnc%12%13