Using CCCC1CCC(C2CCC(c3ccc(O)c(CCC(=O)OCC)c3)CC2)CC1 to produce CCCC1CCC(C2CCC(c3ccc4c(c3)CCC(=O)O4)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.