Using CCNc1nc(-n2cc(C(=O)O)cn2)nc(N)c1Br, C1COCCN1 to produce CCNc1nc(-n2cc(C(=O)N3CCOCC3)cn2)nc(N)c1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.