Using CCCc1c(OCc2ccccc2)ccc2c(=O)cc(C=CC(=O)OCC)oc12 to produce CCCc1c(O)ccc2c(=O)cc(/C=C/C(=O)OCC)oc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.