You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S)-N-[N'-(1,3-benzoxazol-2-yl)carbamimidoyl]-2-phenyl-2-phenylsulfanylacetamide by IUPAC nomenclature, provide its molecular formula.
user
C22H18N4O2S
assistant