Using C1COCCO1, Clc1cc(I)cc(Cl)c1-c1nc2ccnc(Cl)c2s1 to produce C=Cc1cc(Cl)c(-c2nc3ccnc(Cl)c3s2)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.