Using CCOC(=O)c1cn(CC)c2ccc(OCc3ccc(OC)cc3)c(O)c2c1=O to produce CCn1cc(C(=O)O)c(=O)c2c(O)c(OCc3ccc(OC)cc3)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.