Using O=C(NC1C2CC3CC(C2)CC1C3)c1cccc(N2CCNCC2)n1, OCCBr to produce O=C(NC1C2CC3CC(C2)CC1C3)c1cccc(N2CCN(CCO)CC2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.