You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the SMILES representation for (4-methoxy-3-nitrophenyl)-(4-methyl-2-phenylpiperazin-1-yl)methanone ?
user
COC1=CC=C(C(=O)N2CCN(C)CC2C2=CC=CC=C2)C=C1[N+](=O)[O-]
assistant