Using O=S(=O)(O)O, OCC1Cc2c(c(Cl)cc3c(-c4ccccc4Cl)noc23)O1 to produce O=C(O)C1Cc2c(c(Cl)cc3c(-c4ccccc4Cl)noc23)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.