CO[P-](=O)(O)=C([N+]#N)C(C)=O	282	Strange valence at P
[Cl+]=C(N1CCCCC1)N1CCCCC1	190	Strange valence at Cl
CN1CCN(C)C1=[Cl+]	473	Strange valence at Cl
[Cl+]=C(N1CCCC1)N1CCCC1	23	Strange valence at Cl