You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name S-[3-[[(4S,6S,7R,8S)-8-(carbamoyloxymethyl)-7-methoxy-5,12-dimethyl-10,13-dioxo-2,5-diazatetracyclo[7.4.0.02,7.04,6]trideca-1(9),11-dien-11-yl]amino]propyl] ethanethioate into its molecular formula.
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C21H28N4O6S
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