You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-methyl-N-[5-[3-(4-thiophen-3-yl-1H-indol-2-yl)-1H-indazol-5-yl]pyridin-3-yl]propanamide into its molecular formula.
user
C28H23N5OS
assistant