You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(3S,3aS,11aS,11bR)-9-carbamoyl-3-isoquinolin-5-yl-2,3a-dimethyl-7-oxo-3,4,5,8,9,10,11a,11b-octahydro-1H-cyclopenta[c]xanthen-2-yl] acetate into its molecular formula.
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C30H32N2O5
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