Using CCCc1c(OCCCCCOc2ccc3c(c2CCC)OC(C(=O)OC)CC3)ccc(CC)c1O to produce CCCc1c(OCCCCCOc2ccc3c(c2CCC)OC(C(=O)O)CC3)ccc(CC)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.