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)-5,7-dimethyl-2-(pyridin-3-ylmethyl)-1H-chromeno[2,3-c]pyrrole-3,9-dione ?
user
C27H24N2O3
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