Using O=C1c2c(Br)csc2C2CN(Cc3ccccc3)CC12, C[Zn]C to produce Cc1csc2c1C(=O)C1CN(Cc3ccccc3)CC21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.