SMILES: CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)[N+](C)(C)C
Description: The molecule is an iminium ion that forms the cationic portion of the histological dye 'methyl green'. It is an iminium ion and a quaternary ammonium ion.