O=C(Nc1ccc2c(c1)Cc1ccccc1-2)[C@@H]1[C@H](C(=O)O)[C@]2(Cl)C(Cl)=C(Cl)[C@@]1(Cl)C2(Cl)Cl
A negative logP value indicates preferential solubility in water and a positive value indicates an affinity for octanol. What is the negative logP of this molecule?