1-(Cyclopropylcarbonyl)-3-[2-[[(3-cyclohexylureido)carbonylmethyl]dithio]ethyl]urea C??? ??, ??, ??

1-(Cyclopropylcarbonyl)-3-[2-[[(3-cyclohexylureido)carbonylmethyl]dithio]ethyl]urea ?? ?? ? ???

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1-(Cyclopropylcarbonyl)-3-[2-[[(3-cyclohexylureido)carbonylmethyl]dithio]ethyl]urea ?? ??