Using COCCn1c(C)nc2cc(C(=O)OC)c(CCC(=O)c3ccccc3)c(O)c21 to produce COCCn1c(C)nc2cc(C(=O)OC)c(CCC(O)c3ccccc3)c(O)c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.