Using CCCc1nc(O)cc2cc(OC)c(OC)cc12, O=C1CCC(=O)N1I to produce CCCc1nc(O)c(I)c2cc(OC)c(OC)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.