You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-chloro-7-[(4-methoxyphenyl)methyl]pyrrolo[2,3-d]pyrimidine;4-chloro-7H-pyrrolo[2,3-d]pyrimidine;4-(furan-2-yl)-7-[(4-methoxyphenyl)methyl]pyrrolo[2,3-d]pyrimidine by IUPAC nomenclature, provide its molecular formula.
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C38H31Cl2N9O3
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