Using COC(=O)/C=C/c1nc(C(=O)CCCC(=O)OC)ccc1OC to produce COC(=O)CCCC(O)c1ccc(OC)c(CCC(=O)OC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.