Using CCCCc1nc(O)c(CC(=O)OCC)c(=O)n1Cc1ccc(C(=O)OC)cc1 to produce CCCCc1nc(O)c(CC(=O)O)c(=O)n1Cc1ccc(C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.