Using C=CCOc1c2c(c(CCC)c3oc(C(=O)O)cc(=O)c13)CCCC2 to produce CCCOc1c2c(c(CCC)c3oc(C(=O)O)cc(=O)c13)CCCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.