NC(=O)CC[C@@H]1NC(=O)[C@H](Cc2ccc(O)cc2)NC(=O)c2cc([N+](=O)[O-])cc(F)c2OCC[C@@H](C(N)=O)NC1=O
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?