You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-(4-ethylphenyl)-2-(1,3-thiazol-2-yl)-4a,5,6,7,8,8a-hexahydro-1H-chromeno[2,3-c]pyrrole-3,9-dione ?
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C22H22N2O3S
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