You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named acetylene;6-[[(3R,4Z,6E)-6-cyano-2-formyl-3-methylnona-4,6-dienyl]-ethylamino]pyridine-3-carboxylic acid;3,5-dichloro-N-methylaniline;N-methylformamide by IUPAC nomenclature, provide its molecular formula.
user
C31H39Cl2N5O4
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