The specific chemical reaction scheme (showing the starting material, intermediate steps A and B, and reagents) is missing from the provided text. In the context of the Class 12 NCERT Chemistry curriculum for Amines and typical AIPMT/NEET questions, these sequences usually involve multi-step conversions such as the Hoffmann bromamide degradation (converting an amide to an amine with one less carbon), reduction of nitriles/isocyanides, or the diazotisation of aniline followed by coupling or substitution. Without the reaction pathway, the exact structure of product 'C' cannot be determined.