Using CCOC(=O)C(Cc1cccc2c1ccn2Cc1nc(-c2cc(OC)cc(OC)c2)oc1C)OCC to produce CCOC(Cc1cccc2c1ccn2Cc1nc(-c2cc(OC)cc(OC)c2)oc1C)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.