You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(3,4-dimethoxyphenyl)ethyl]-5-[(2R)-2-methyl-2,3-dihydro-1,4-benzothiazin-4-yl]thiophene-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H26N2O3S2
assistant