You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-benzyl-2-phenyl-2-[(2-thiophen-2-ylacetyl)-(thiophen-2-ylmethyl)amino]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H24N2O2S2
assistant