You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule benzyl 2',3,6,19'-tetramethylspiro[3,3a,5,6,7,7a-hexahydrofuro[3,2-b]pyridine-2,17'-6,7-diazapentacyclo[11.8.0.02,10.04,8.014,20]henicosa-4(8),5,19-triene]-4-carboxylate into molecular formula.
user
C37H49N3O3
assistant