Using CCCc1cc(CCC)c2oc(C(=O)c3ccc(OC)cc3)c(C)c2c1O to produce CCCc1cc(CCC)c2oc(Cc3ccc(OC)cc3)c(C)c2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.