Chemical Name: N-[4-[[4-(Diethylamino)phenyl](5-hydroxy-2,4-disulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-, hydroxide, inner salt, calcium salt (2:1);
Smiles: CC/[N+](CC)=C(C=C/1)\C=CC1=C(C2=C(S([O-])(=O)=O)C=C(S(O)(=O)=O)C(O)=C2)\C3=CC=C(N(CC)CC)C=C3
Inchi: InChI=1S/C13H17N3O2/c1-10-12(14(2)9-17)13(18)16(15(10)3)11-7-5-4-6-8-11/h4-8,17H,9H2,1-3H3