You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(12-chloro-7-thia-9,11-diazatricyclo[6.4.0.02,6]dodeca-1(8),2(6),11-trien-3-yl)acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H11ClN2O2S
assistant