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 1-[3-[[[ethylamino-[(3-methylthiophen-2-yl)methylamino]methylidene]amino]methyl]pyridin-2-yl]piperidine-4-carboxamide ?
user
C21H30N6OS
assistant