The correct IUPAC name of the following compound is

1. Identify the Principal Functional Group:
2. The molecule contains an aldehyde ($$-CHO$$), a ketone ($$C=O$$), an alkene ($$C=C$$), and a nitro group $$(-NO_{2})$$. According to IUPAC priority rules, the aldehyde takes precedence and is assigned carbon C1.
3. Number the Principal Chain:
   Starting from the aldehyde carbon, the longest continuous chain containing the ketone, alkene, and nitro group has 7 carbons (hept-).
   • C1: Aldehyde carbon $$-al$$
   • C3: Ketone group (-oxo-)
   • C4: Alkene starts and has a methyl branch (-4-en-, 4-methyl-)
   • C6: Nitro group (6-nitro-)
4. Assemble the Name:
   Alphabetize the substituents: methyl, nitro, and oxo.
   • Substituents: 4-methyl, 6-nitro, 3-oxo.
   • Parent chain & suffix: hept-4-enal.

Full Name: 4-methyl-6-nitro-3-oxohept-4-enal (Option C)