65104-21-4 7'-Ethyl-6'-(3-)7'-ethyl-6',7'-dihydrospiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazol-6'-ylidene)-2-methyl-1-propenyl)spiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazolium iodide Spiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazolium), 7'-ethyl-6'-(3-(7'-ethylspiro(cyclohexane-1,2'-(1,3)dioxolo(4,5-f)benzothiazol)-6'(7'H)-ylidene)-2-methyl-1-propenyl)-, iodide