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 1-(thiophene-2-carbonyl)-N-[(E)-[(1S,4S)-1,7,7-trimethyl-2-bicyclo[2.2.1]heptanylidene]amino]piperidine-4-carboxamide .
user
C21H29N3O2S
assistant