Using Nc1nc(O)c2ncn(COCCO)c2n1, O=C(CBr)c1ccc(Cl)cc1 to produce O=c1c2ncn(COCCO)c2nc2[nH]c(-c3ccc(Cl)cc3)cn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.