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 ethyl 2-[[1-(thiophene-2-carbonyl)azetidine-3-carbonyl]amino]-5,6-dihydro-4H-cyclopenta[d][1,3]thiazole-4-carboxylate ?
user
C18H19N3O4S2
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