Using COc1ccc2c(C)c(-c3ccc(OC)nc3)c(=O)oc2c1 to produce COc1ccc2c(C)c(-c3ccc(O)nc3)c(=O)oc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.