O=c1[nH]c2c(N/N=C/c3ccc([N+](=O)[O-])o3)c([N+](=O)[O-])c(N/N=C/c3ccc([N+](=O)[O-])o3)c([N+](=O)[O-])c2[nH]1
A negative Log P value indicates preferential solubility in water and a positive value indicates an affinity for octanol. What is the logP of this molecule?