You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3aR,7aR)-2-[(4-chloro-2-methylphenyl)methyl]-1,3,4,6,7,7a-hexahydropyrano[3,4-c]pyrrole-3a-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
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C16H20ClNO3
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