Using BrCC1CO1, O=Cc1c(N2CCNCC2)n(-c2ccccc2)c2ccccc12 to produce O=Cc1c(N2CCN(CC3CO3)CC2)n(-c2ccccc2)c2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.