Using CCCCCOc1c(OC)ccc2c(Cl)c(NC(=O)OCC)cnc12 to produce CCCCCOc1c(OC)ccc2c(Cl)c(NC(=O)O)cnc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.