花青素CY7.5

(2Z)-2-[(2E，4E，6E)-7-[3-(5-Carboxypentyl)-1，1-dimethyl-6，8-disulfobenzo[e]indol-3-ium-2-yl]hepta-2，4，6-trienylidene]-3-ethyl-1，1-dimethyl-6-sulfobenzo[e]indole-8-sulfonate