Using CCOC(=O)CN1CCN(C(=O)CCc2cc(OC)c(OC)c(OC)c2)CC1 to produce COc1cc(CCC(=O)N2CCN(CC(=O)O)CC2)cc(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.