You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [3-ethyl-5-(1-methylimidazol-4-yl)phenyl]azanide;4-(2-methylphenyl)-2-pyridin-3-yl-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-ide;yttrium is given. What is its corresponding molecular formula?
user
C31H31N7Y-2
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