Using Nc1sc2c(c1C(=O)c1ccc3c(c1)OCO3)CCCC2, COC(=O)CCC(C)=O to produce COC(=O)Cc1c(C)nc2sc3c(c2c1-c1ccc2c(c1)OCO2)CCCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.