Using COC(=O)c1ccc(OC)cc1OCc1ccc(OCCc2nc(-c3ccccc3)oc2C)cc1 to produce COc1ccc(C(=O)O)c(OCc2ccc(OCCc3nc(-c4ccccc4)oc3C)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.