You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-N-[[4-(oxolan-2-ylmethoxy)phenyl]carbamothioyl]-3-thiophen-2-ylprop-2-enamide by IUPAC nomenclature, provide its molecular formula.
user
C19H20N2O3S2
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