You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl 4-cyclopropyl-2-[[2-[(5-cyclopropyl-4-methyl-1,2,4-triazol-3-yl)sulfanyl]acetyl]amino]thiophene-3-carboxylate .
user
C18H22N4O3S2
assistant