8-Methoxy-4-methyl-3-(3-sulfonatopropyl)-5,12-dithia-3-azatricyclo[7.3.0.0,2,6]dodeca-1,3,6,8,10-pentaen-3-ium 5g

8-Methoxy-4-methyl-3-(3-sulfonatopropyl)-5,12-dithia-3-azatricyclo[7.3.0.0,2,6]dodeca-1,3,6,8,10-pentaen-3-ium 5g