You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-chloro-5-(trifluoromethyl)phenyl]-3-[(Z)-thiophen-2-ylmethylideneamino]thiourea is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H9ClF3N3S2
assistant