You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (3aR,4R,5R,7S,7aR)-2-anilino-4,5-dihydroxy-N-[(2-methoxyphenyl)methyl]-3a,4,5,6,7,7a-hexahydro-1,3-benzothiazole-7-carboxamide into its molecular formula.
user
C22H25N3O4S
assistant