You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (4R,4aR,5aS,12aS)-4-(dimethylamino)-3,10,11,12a-tetrahydroxy-7-(4-methylthiophen-2-yl)-1,12-dioxo-3,4,4a,5,5a,6-hexahydro-2H-tetracene-2-carboxamide into its molecular formula.
user
C26H28N2O7S
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