COc1ccc2c(c1)[n+]([O-])c(C(=O)C/C(=N\NC(=O)C[N+](C)(C)C)C(=O)Nc1cc(Cl)ccc1Cl)c(C)[n+]2[O-].[Cl-]
In analogy to the rule of five, it has been proposed that ideal fragments should follow the rule of three, in which the molecular weight of a fragment is <300, the c LogP is ≤3, the number of hydrogen bond donors is ≤3 and the number of hydrogen bond acceptors is ≤3. The molecule meets rule of three or not?