Using C1COCCN1, O=C(O)C1CCN(C(=O)Nc2ccc3c(c2)-c2ccccc2S3(=O)=O)CC1 to produce O=C(Nc1ccc2c(c1)-c1ccccc1S2(=O)=O)N1CCC(C(=O)N2CCOCC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.