You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (2R)-2-[3-[(3-amino-4-sulfanylbutyl)amino]-6-phenylpyridin-2-yl]oxy-N-benzylpropanamide .
user
C25H30N4O2S
assistant