SMILES: CC1=CC2=C(C=C1N)SC3=CC(=[N+](C)C)C=CC3=N2
Description: The molecule is an organic cation that is phenothiazin-5-ium substituted by methyl, amino and dimethylamino groups at positions 2, 3 and 7 respectively. The chloride salt is used as a histological dye.