Using CCCc1cc(OCCc2nc(-c3ccccc3)oc2C)cc(CCC)c1OCC(=O)OCC to produce CCCc1cc(OCCc2nc(-c3ccccc3)oc2C)cc(CCC)c1OCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.