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 1-O-[[2,5-bis[(4-butoxybenzoyl)oxy]benzoyl]oxymethyl] 3-O-[[2,5-bis[(4-pentylcyclohexanecarbonyl)oxy]benzoyl]oxymethyl] 5-O-(4-hydroxybutyl) 1-methylheptane-1,3,5-tricarboxylate;methane .
user
C87H142O21
assistant