Using CC(=O)OCCBr, COC(=O)N1CCC(N2CCC(n3c(=O)[nH]c4ccccc43)CC2)CC1 to produce COC(=O)N1CCC(N2CCC(n3c(=O)n(CCOC(C)=O)c4ccccc43)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.