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system
Provide the molecular formula for the IUPAC named substance 2-chloro-4-(20-phenyl-24-thia-9-azahexacyclo[15.7.0.02,10.03,8.011,16.018,23]tetracosa-1(17),2(10),3,5,7,11,13,15,18(23),19,21-undecaen-9-yl)-[1]benzofuro[3,2-d]pyrimidine .
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C38H20ClN3OS
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