Using CCOC(=O)c1cn(C(COC)COC)c2ccc(I)cc2c1=O to produce COCC(COC)n1cc(C(=O)O)c(=O)c2cc(I)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.