Using CCCCc1ncc(CC(Cc2ccccc2)C(=O)OC)n1Cc1ccccc1 to produce CCCCc1ncc(CC(Cc2ccccc2)C(=O)O)n1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.