Using O=C1NCCN1c1ccncc1, Clc1ccc(OCCCCCCCBr)cc1 to produce O=C1N(CCCCCCCOc2ccc(Cl)cc2)CCN1c1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.