Using C1COCCN1, Cc1c(Br)cnn1CC1(OCC(=O)O)CCCCC1 to produce Cc1c(Br)cnn1CC1(OCC(=O)N2CCOCC2)CCCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.