You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (8R)-7-(cyclopropylmethyl)-8-ethyl-9-hydroxy-1,7-diazapentacyclo[10.7.1.02,11.04,9.016,20]icosa-2(11),12(20),13,15-tetraen-17-one;4-methylbenzene-1,2-diol into its molecular formula.
user
C31H38N2O4
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