Using CCCCCCc1cc2c(cc1OCCCC(=O)OCC)C(=O)CC2, CC(C)(C)[O-] to produce C=C1CCc2cc(CCCCCC)c(OCCCC(=O)OCC)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.