Using CCN(CC)CCn1nc2c3c(c(N)ccc31)[Se]c1ccccc1-2, NCCBr to produce CCN(CC)CCn1nc2c3c(c(NCCN)ccc31)[Se]c1ccccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.