You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (5E)-N-[3-cyano-6-(hydroxymethyl)-4,5,6,7-tetrahydro-1-benzothiophen-2-yl]-6-methoxy-3-methyl-4-methylideneocta-5,7-dienamide ?
user
C21H26N2O3S
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