You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (4R,4aS,7S,7aR,12bS)-7-[(2'S,4R,4aS,7R,7aR,12bS)-3-(cyclopropylmethyl)-4a-hydroxy-9-methoxyspiro[2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-7,5'-2H-1,3-oxazole]-2'-yl]-3-(cyclopropylmethyl)-9-methoxy-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-4a,7-diol ?
user
C44H53N3O8
assistant