You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the SMILES representation of the molecule 3-(3,4-dihydro-2H-chromen-7-yl)-7-piperazin-1-ylchromen-2-one .
user
O=C1OC2=CC(N3CCNCC3)=CC=C2C=C1C1=CC=C2CCCOC2=C1
assistant