Using O=C1NCCN1c1ccncc1, Clc1cncc(OCCCCCCBr)c1 to produce O=C1N(CCCCCCOc2cncc(Cl)c2)CCN1c1ccncc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.