You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the SMILES notation of the molecule 5-methylidene-3a-[[4-(pyrrolidine-1-carbonyl)phenyl]methyl]-1,4,6,6a-tetrahydrocyclopenta[c]furan-3-one ?
user
C=C1CC2COC(=O)C2(CC2=CC=C(C(=O)N3CCCC3)C=C2)C1
assistant