[Cl+]=C(N1CCCC1)N1CCCC1 86 Strange valence at Cl [Cl+]=C(N1CCCCC1)N1CCCCC1 207 Strange valence at Cl O=c1[c]ccc(OCc2ccccc2)[nH]1 149 Strange valence at C Cc1c[c]c(=O)[nH]c1F 154 Error in aromatic system CC1(C)OB(c2[c]c3ccccc3cc2)OC1(C)C 86 Error in aromatic system CS(C)(C)(=O)Cl 497 Strange valence at S C[S](CCC(N)C(=O)O)CC1OC(n2cnc3c(N)ncnc32)C(O)C1O 275 Strange valence at S