Using COC(=O)c1cccc2oc(/C=C/c3ccc(OC)c(OC)c3)nc12 to produce COc1ccc(/C=C/c2nc3c(C(=O)O)cccc3o2)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.