Using COc1ccc2c(-c3ccccc3)c(C(=O)c3ccccc3)sc2c1 to produce O=C(c1ccccc1)c1sc2cc(O)ccc2c1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.