CCCCN1CC(=O)N2[C@H]3c4cc(Br)ccc4OC[C@@H]3[C@H](C(=O)OCC)[C@]2(C)C1=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?