Molecular structure of Nile Blue A perchlorate (CAS NO.53340-16-2) is:

Product Name: Nile Blue A perchlorate
CAS Registry Number: 53340-16-2
IUPAC Name: [9-(Diethylamino)benzo[a]phenoxazin-5-ylidene]azanium perchlorate
Molecular Weight: 417.8429 [g/mol]  
Molecular Formula: C₂₀H₂₀ClN₃O₅  
H-Bond Donor: 1  
H-Bond Acceptor: 7
EINECS: 258-489-3
Melting Point: 290-292 °C (dec.)(lit.)
Stability: Stable. Incompatible with strong oxidizing agents.
Other Registry Number: 71123-96-1
Related Registry Number: 2381-85-3 (Parent)
Product Categories: Laser Dyes;Organic Electronics and Photonics;Photonic and Optical Materials
Canonical SMILES: CCN(CC)C1=CC2=C(C=C1)N=C3C4=CC=CC=C4C(=[NH2+])C=C3O2.[O-]Cl(=O)(=O)=O
InChI: InChI=1S/C20H19N3O.ClHO4/c1-3-23(4-2)13-9-10-17-18(11-13)24-19-12-16(21)14-7-5-6-8-15(14)20(19)22-17;2-1(3,4)5/h5-12,21H,3-4H2,1-2H3;(H,2,3,4,5) 
InChIKey: OUAWJLNOTQAOHL-UHFFFAOYSA-N

Safty information about Nile Blue A perchlorate (CAS NO.53340-16-2) is:
Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
RTECS: DJ1930500

 Nile Blue A perchlorate , its cas register number is 53340-16-2. It also can be called 5-Amino-9-(diethylamino)benzo(a)phenoxazin-7-ium perchlorate ; Nile Blue 690 perchlorate ; Nile Blue perchlorate ; Benzo(a)phenoxazin-7-ium, 5-amino-9-(diethylamino)-, perchlorate ; Benzo(a)phenoxazin-7-ium, 5-amino-9-(diethylamino)-, perchlorate (1:1)  .It is a dark green crystals.