Using O=C1CCC(=O)N1Br, COc1c(C(=O)O)cnn1-c1ccc(C(=O)NCC2CCOCC2)cn1 to produce COc1c(Br)cnn1-c1ccc(C(=O)NCC2CCOCC2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.