CC(C)(C)n1[c-][n+](C(C)(C)C)cc1	336	Error in aromatic system
CC(C)c1cccc(C(C)C)c1-n1[c-][n+](-c2c(C(C)C)cccc2C(C)C)cc1	12	Error in aromatic system
N[N+]1=CCN=C[CH-]1	292	Strange valence at N