You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(2E,4Z)-7,7-dimethyl-6-methylideneocta-2,4-dien-3-yl]sulfanyl-4-[(2-methylpropan-2-yl)oxy]benzene into molecular formula.
user
C21H30OS
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