Using C1COCCO1, COc1cc(Oc2cccc3c2NC(=O)C3)cc(OC)c1OC to produce COc1cc(Oc2cccc(CC(=O)O)c2N)cc(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.