Using COC(=O)c1cc2cc(OCc3cc(OC)c(OC)c(OC)c3)c(OC)cc2[nH]1 to produce COc1cc2[nH]c(C(=O)O)cc2cc1OCc1cc(OC)c(OC)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.