Using Cc1nccn2c1c(Br)nc2[C@H]1CC[C@H](CNC(=O)OCc2ccccc2)CC1 to produce Cc1nccn2c1c(Br)nc2[C@H]1CC[C@H](CN)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.