You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-O-[(2S)-2-[(2E)-2-chloro-2-[(4-chlorophenyl)hydrazinylidene]acetyl]oxypropyl] 5-O-[(2S)-1-prop-2-enoyloxypropan-2-yl] 2-(4-chlorophenyl)-3,4-dihydropyrazole-3,5-dicarboxylate .
user
C28H27Cl3N4O8
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