SMILES: C[N+](=C1C=CC2=NC3=C(C=C(C=C3)N)SC2=C1)C
Description: The molecule is an organic cation that is phenothiazin-5-ium substituted by amino and dimethylamino groups at positions 3 and 7 respectively. The chloride salt is the histological dye 'azure A'.