Using O=C1CCN(CC23CC(c4ccccc42)c2ccc(Cl)cc23)CC1, Brc1cccnc1 to produce OC1(c2cccnc2)CCN(CC23CC(c4ccccc42)c2ccc(Cl)cc23)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.