Using Nc1cnc2c(c1)CN(Cc1ccccc1)CC2, COc1ccc(C(=O)O)cc1Br to produce COc1ccc(C(=O)Nc2cnc3c(c2)CN(Cc2ccccc2)CC3)cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.