You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-3-(thiophen-2-ylmethyl)urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H23BN2O3S
assistant