SMILES: CC1=[NH+]C(=CC=C1)C#CC2=CC=CC=C2
Description: The molecule is a pyridinium ion that is the conjugate acid of 2-methyl-6-(phenylethynyl)pyridine, arising from protonation of the pyridine nitrogen. It is a conjugate acid of a 2-methyl-6-(phenylethynyl)pyridine.