Alcian blue 8GX

CN (C) C (=[N+] (C) C) SCC1=CC2=C (C=C1) C3=NC4=NC (=NC5=C6C=C (C=CC6=C ([N-]5) N=C7C8=C (C=CC (=C8) CSC (=[N+] (C) C) N (C) C) C (=N7) N=C2[N-]3) CSC (=[N+] (C) C) N (C) C) C9=C4C=C (C=C9) CSC (=[N+] (C) C) N (C) C.[Cl-].[Cl-].[Cl-].[Cl-].[Cu+2]