Using O=c1c(Oc2ccc(Br)cc2)c(N2CCNCC2)cnn1-c1ccc(Cl)cc1, OCCBr to produce O=c1c(Oc2ccc(Br)cc2)c(N2CCN(CCO)CC2)cnn1-c1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.