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 4-hydroxy-6-[16-(hydroxymethyl)-4,6,8,10,12,14-hexamethyl-15-oxononadeca-2,6,8,10,13-pentaen-2-yl]-3,5-dimethylpyran-2-one .
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C33H48O5
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