Which of the following compounds are representations of the same molecule? (i) CH₃CH₂CH₂CH₂CH₂CH₃ _(ii) _(iii) A) only (i) and (ii) B) only (i) and (iii) C) only (ii) and (iii) D) all of these

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All three representations are the same molecule, which is notated using the SMILES notation. SMILES notation is a method to represent a molecule in a compact, human-readable format. Note that (i) appears six times, which might suggest that it is the correct answer. However, it is possible that each occurrence was generated separately with slight variations in the formatting, hence all three notations are considered equivalent.

Which of the Following Compounds Are Representations of the Same