You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-[(3S,4R)-1-[(3-chlorophenyl)methyl]-4-[4-(2-methoxyphenyl)piperazin-1-yl]piperidin-3-yl]-N-[[(2R)-oxolan-2-yl]methyl]propanamide by IUPAC nomenclature, provide its molecular formula.
user
C31H43ClN4O3
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