1-methyl-2-[3-(1-methylnaphtho[1,2-d]thiazolin-2-ylidene)propenyl]naphtho[1,2-d]thiazolium iodide C??? ??, ??, ??

1-methyl-2-[3-(1-methylnaphtho[1,2-d]thiazolin-2-ylidene)propenyl]naphtho[1,2-d]thiazolium iodide ?? ?? ? ???

???

?? ??

1-methyl-2-[3-(1-methylnaphtho[1,2-d]thiazolin-2-ylidene)propenyl]naphtho[1,2-d]thiazolium iodide ?? ??