Using CCOC(=O)c1cnc(C(=O)c2cccc(OCC(=O)O)c2)c2cc(OC)c(OC)cc12 to produce COc1cc2c(C(=O)O)cnc(C(=O)c3cccc(OCC(=O)O)c3)c2cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.