C-C-C-C-C-C-С . Сн3

It looks like you are trying to depict a structural formula for a chemical compound. Based on the notation you provided (C-C-C-C-C-C-CH3), it appears you are representing a straight-chain hydrocarbon, specifically an alkane.

This could be interpreted as hexane (C6H14), which has a six-carbon chain, ending with a methyl group (CH3) at one end. The full structural formula for hexane is:

CH3-CH2-CH2-CH2-CH2-CH3

If you intended to convey something different, please clarify your question or provide more details about what you need help with!