This chemical is called Fuchsin basic, and its systematic name is 4-[(4-amino-3-methylphenyl)(4-aminophenyl)methylidene]cyclohexa-2,5-dien-1-iminium chloride. With the molecular formula of C₂₀H₂₀ClN₃, its molecular weight is 337.85. The CAS registry number of this chemical is 58969-01-0. Additionally, this chemical is green crystalline powder.

Other characteristics of the Fuchsin basic can be summarised as followings: (1)ACD/LogP: 0.88; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 0; (4)ACD/LogD (pH 7.4): 1; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 2; (7)ACD/KOC (pH 5.5): 3; (8)ACD/KOC (pH 7.4): 54; (9)#H bond acceptors: 3; (10)#H bond donors: 5; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 75.89 Å²; (13)Flash Point: 299 °C; (14)Enthalpy of Vaporization: 85.6 kJ/mol; (15)Boiling Point: 570.8 °C at 760 mmHg; (16)Vapour Pressure: 4.86E-13 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following: This chemical has limited evidence of a carcinogenic effect. Keep the container tightly closed. Keep it away from sources of ignition. Wear suitable protective clothing and gloves.

You can still convert the following datas into molecular structure: 
1.SMILES: [Cl-].[NH2+]=C\1/C=C\C(/C=C/1)=C(/c2ccc(N)c(C)c2)c3ccc(N)cc3
2.InChI: InChI=1/C20H19N3.ClH/c1-13-12-16(6-11-19(13)23)20(14-2-7-17(21)8-3-14)15-4-9-18(22)10-5-15;/h2-12,21H,22-23H2,1H3;1H/b20-14-,21-17?;
3.InChIKey: NIKFYOSELWJIOF-SVFFXJIWBQ