CCCNC(=O)OC[C@@H]1O[C@H](CCO/N=C(\C)CCC(=O)OC[C@@H]2O[C@H](C#Cc3ccccc3)C=C[C@@H]2Oc2ccc(C)cc2)C=C[C@@H]1Oc1ccc(OC)cc1
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?