Using O=C1Nc2cccnc2N(C(=O)CN2CCNCC2)c2ccccc21, BrCC=Cc1ccccc1 to produce O=C1Nc2cccnc2N(C(=O)CN2CCN(CC=Cc3ccccc3)CC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.