Using CCCCc1nc2cccnc2n1-c1cccc2cc(-c3ccccc3C(=O)OC)ccc12 to produce CCCCc1nc2cccnc2n1-c1cccc2cc(-c3ccccc3C(=O)O)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.