You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3-acetamidophenyl)methyl]-2-[3-[(2-amino-3-sulfanylpropyl)amino]-6-phenylpyridin-2-yl]oxypropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H31N5O3S
assistant