Using COC(=O)c1ccc(CN2CCOc3ccc(NC(=O)OC4CCCC4)cc32)c(OC)c1 to produce COc1cc(C(=O)O)ccc1CN1CCOc2ccc(NC(=O)OC3CCCC3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.