Using O=C1C=C2c3cccc(I)c3CCN2C(=O)CN1, C=C(OCC)[Sn](CCCC)(CCCC)CCCC to produce C=C(OCC)c1cccc2c1CCN1C(=O)CNC(=O)C=C21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.