You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-(3-methoxyphenyl)-3-[(4R)-6-phenyl-2,3,3a,4-tetrahydro-1H-pyrrolo[1,2-a][1,4]benzodiazepin-4-yl]urea .
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C26H26N4O2
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