Fn1c(Cl)cccc1=[Cl+]	189	Strange valence at Cl
[c-]1n(-c2ccccc2)c(-c2ccccc2)n[n+]1-c1ccccc1	110	Error in aromatic system
CC1=[C-]CC=C1	120	Strange valence at C
CC#Cc1ccc(C2(Cl)CC=C[S]2C(C)O)s1	305	Strange valence at S