Using C1=COCC1, CCCn1nnn(-c2cc(O)c(Cl)cc2Cl)c1=O to produce CCCn1nnn(-c2cc(OC3CCCO3)c(Cl)cc2Cl)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.