You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[5-[[(4S)-4-(5-methylfuran-2-yl)-1,4,6,7-tetrahydroimidazo[4,5-c]pyridin-5-yl]methyl]thiophen-3-yl]prop-2-yn-1-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H19N3O2S
assistant