You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[4-(3-ethyl-8-morpholin-4-yl-4,7,8,9-tetrahydro-1,2,3,5,7-pentazonin-6-yl)phenyl]-3-[4-(4-methylpiperazine-1-carbonyl)phenyl]urea by IUPAC nomenclature, provide its molecular formula.
user
C29H40N10O3
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