You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named methyl 2-[2-[3-[(2-amino-3-sulfanylpropyl)amino]-6-phenylpyridin-2-yl]oxypropanoylamino]-3-phenylpropanoate is given. What is its corresponding molecular formula?
user
C27H32N4O4S
assistant