Using COC(=O)CP(=O)(OC)OC, CCC(=O)c1c(O)cc(CCCC=O)oc1=O to produce CCC(=O)c1c(O)cc(CCC/C=C/C(=O)OC)oc1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.