Using CCCc1c(OCCCOc2ccc3c(c2)OC(C)(CCC(=O)OCC)CC3)ccc(C(C)=O)c1O to produce CCCc1c(OCCCOc2ccc3c(c2)OC(C)(CCC(=O)O)CC3)ccc(C(C)=O)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.